328 KiB
Changelog
All notable changes to this project will be documented in this file. See Changelog Update if you want to update this document.
Unreleased / Beta / In Rust Nightly
Rust 1.74
Current stable, released 2023-11-16
View all 94 merged pull requests
New Lints
redundant_as_str
#11526needless_borrows_for_generic_args
#11511path_ends_with_ext
#11483unnecessary_map_on_constructor
#11413missing_asserts_for_indexing
#10692iter_out_of_bounds
#11396implied_bounds_in_impls
#11362reserve_after_initialization
#11373should_panic_without_expect
#11204
Moves and Deprecations
- Renamed
incorrect_clone_impl_on_copy_type
tonon_canonical_clone_impl
#11358 - Renamed
incorrect_partial_ord_impl_on_ord_type
tonon_canonical_partial_ord_impl
#11358 - Moved
non_canonical_clone_impl
tosuspicious
(Now warn-by-default) #11358 - Moved
non_canonical_partial_ord_impl
tosuspicious
(Now warn-by-default) #11358 - Moved
needless_pass_by_ref_mut
tonursery
(Now allow-by-default) #11596
Enhancements
undocumented_unsafe_blocks
: The config valuesaccept-comment-above-statement
andaccept-comment-above-attributes
totrue
by default #11170explicit_iter_loop
: Addedenforce-iter-loop-reborrow
to disable reborrow linting by default #11418
ICE Fixes
enum_variant_names
: No longer crashes if the threshold is 0 and the enum has no variants #11552cast_possible_truncation
: No longer crashes on values larger thanu64::MAX
#11517tuple_array_conversions
: No longer crashes if the array length is not usize #11379useless_conversion
: No longer crashes, when the receiver is a non-fn item #11070
Rust 1.73
Released 2023-10-05
View all 103 merged pull requests
New Lints
impossible_comparisons
#10843redundant_comparisons
#10843ignored_unit_patterns
#11242readonly_write_lock
#11210filter_map_bool_then
#11115needless_return_with_question_mark
#11031redundant_guards
#10955redundant_locals
#10885absolute_paths
#11003error_impl_error
#11107iter_skip_zero
#11046string_lit_chars_any
#11052four_forward_slashes
#11140format_collect
#11116needless_pass_by_ref_mut
#10900manual_is_infinite
#11049manual_is_finite
#11049incorrect_partial_ord_impl_on_ord_type
#10788read_line_without_trim
#10970type_id_on_box
#10987
Moves and Deprecations
- Renamed
unwrap_or_else_default
tounwrap_or_default
#10120 - Moved
tuple_array_conversions
topedantic
(Now allow-by-default) #11146 - Moved
arc_with_non_send_sync
tosuspicious
(Now warn-by-default) #11104 - Moved
needless_raw_string_hashes
topedantic
(Now allow-by-default) #11415
Enhancements
unwrap_used
: No longer lints on the never-type or never-like enums #11252expect_used
: No longer lints on the never-type or never-like enums #11252
False Positive Fixes
panic_in_result_fn
: No longer triggers ontodo!
,unimplemented!
,unreachable!
#11123
Suggestion Fixes/Improvements
semicolon_if_nothing_returned
: The suggestion is now machine-applicable with rustfix #11083
ICE Fixes
filter_map_bool_then
: No longer crashes on late-bound regions #11318unwrap_or_default
: No longer crashes on alias types for local items #11258unnecessary_literal_unwrap
: No longer crashes onNone.unwrap_or_default()
#11106- Fixed MIR-related ICE #11130
missing_fields_in_debug
: No longer crashes on non-ADT self types #11069
Rust 1.72
Released 2023-08-24
View all 131 merged pull requests
New Lints
manual_try_fold
#11012tuple_array_conversions
#11020redundant_at_rest_pattern
#11013needless_pub_self
#10967pub_with_shorthand
#10967pub_without_shorthand
#10967manual_range_patterns
#10968needless_raw_string_hashes
#10884needless_raw_strings
#10884incorrect_clone_impl_on_copy_type
#10925drain_collect
#10835single_range_in_vec_init
#10934unnecessary_literal_unwrap
#10358large_stack_frames
#10827min_ident_chars
#10916needless_if
#10921excessive_nesting
#10672arc_with_non_send_sync
#10898redundant_type_annotations
#10570host_endian_bytes
#10826little_endian_bytes
#10826big_endian_bytes
#10826ptr_cast_constness
#10779needless_else
#10810
Moves and Deprecations
- Moved
redundant_clone
tonursery
(Now allow-by-default) #10873
Enhancements
undocumented_unsafe_blocks
: Addedaccept-comment-above-attributes
configuration #10986undocumented_unsafe_blocks
: Addedaccept-comment-above-statement
configuration. #10886missing_panics_doc
: No longer lints ontodo!()
#10976module_inception
: Addedallow-private-module-inception
configuration. #10917- Errors and warnings generated while parsing
clippy.toml
now point to the location in the TOML file the error/warning occurred in. #10607
False Positive Fixes
excessive_precision
: No longer lints overflowing literals #10952
Suggestion Fixes/Improvements
option_map_unwrap_or
: The suggestion now considers the setmsrv
config value #11030
Documentation Improvements
- Clippy's lint list now stores filter parameters in the URL, to allow easy sharing #10834
Rust 1.71
Released 2023-07-13
Note: Clippy will use a shorter changelog format from now on, if you want a detailed list of all changes, please check out the list of merged pull requests.
View all 78 merged pull requests
New Lints
non_minimal_cfg
#10763manual_next_back
#10769ref_patterns
#10736default_constructed_unit_structs
#10716manual_while_let_some
#10647needless_bool_assign
#10432items_after_test_module
#10578
Moves and Deprecations
- Rename
integer_arithmetic
toarithmetic_side_effects
#10674 - Moved
redundant_clone
tonursery
(Now allow-by-default) #10873
Enhancements
invalid_regex
: Now supports the new syntax introduced after regex v1.8.0 #10682semicolon_outside_block
: Addedsemicolon-outside-block-ignore-multiline
as a new config value. #10656semicolon_inside_block
: Addedsemicolon-inside-block-ignore-singleline
as a new config value. #10656unnecessary_box_returns
: Addedunnecessary-box-size
as a new config value to set the maximum size ofT
inBox<T>
to be linted. #10651
Documentation Improvements
cargo clippy --explain LINT
now shows possible configuration options for the explained lint #10751- New config values mentioned in this changelog will now be linked. #10889
- Several sections of Clippy's book have been reworked #10652 #10622
Rust 1.70
Released 2023-06-01
View all 91 merged pull requests
New Lints
large_futures
#10414missing_assert_message
#10362clear_with_drain
#10528redundant_async_block
#10448collection_is_never_read
#10415let_with_type_underscore
#10467tests_outside_test_module
#10543allow_attributes
#10481suspicious_doc_comments
#10497unnecessary_box_returns
#9102manual_main_separator_str
#10483unnecessary_struct_initialization
#10489manual_slice_size_calculation
#10601lines_filter_map_ok
#10534
Moves and Deprecations
- Moved
let_underscore_untyped
torestriction
#10442
Enhancements
extra_unused_type_parameters
: No longer lints on public items ifavoid-breaking-exported-api
is set #10536len_without_is_empty
: Now also detectsasync
functions #10359arithmetic_side_effects
: Now correctly handles divisions and modulo expressions if the right-hand-side is unknown #10585nonminimal_bool
: No longer ignores#[allow]
attributes #10588uninit_vec
,uninit_assumed_init
: Now uses a better heuristic #10520ifs_same_cond
: Now also detects immutable method calls. #10350arithmetic_side_effects
: No longer lints on right or left shifts with constant integers, as the compiler warns about them #10309items_after_statements
:#[allow(items_after_statements)]
now works on items #10542significant_drop_tightening
: Was optimized #10533
False Positive Fixes
single_component_path_imports
: No longer lints if the import is used relative toself
#10566derivable_impls
: No longer suggests derivingDefault
on generics with implicit arguments #10399let_unit_value
: No longer lints if the expression contains anawait
#10439double_must_use
: Now ignoresasync
functions #10589manual_clamp
: No longer lints in constant context #10479almost_swapped
: Now ignores external macros #10502nonminimal_bool
: Now ignores macros #10527needless_return
: No longer lints match statements with incompatible branches #10593use_self
: Do not suggest usingSelf
in const generic parameters #10375mem_replace_option_with_none
: No longer lints on field expressions #10594items_after_statements
: No longer lints on items from macros #10542print_literal
,write_literal
: No longer lint strings coming from thefile!()
macro #10573uninit_vec
,uninit_assumed_init
: Now check the types inside arrays and tuples #10553almost_swapped
: No longer lints if a variable is assigned to itself #10499missing_docs_in_private_items
: No longer lints on public items #10324
Suggestion Fixes/Improvements
extra_unused_type_parameters
: The suggestion is now machine applicable #10536match_single_binding
: Now adds a semicolon after the suggestion #10470missing_const_for_fn
: Now includes a note if the change could break compatibility #10618cast_possible_truncation
: Corrected suggestion for float and wildcard casts #10496transmutes_expressible_as_ptr_casts
: The suggestion now includes parentheses when they are required #10454
ICE Fixes
needless_borrow
: No longer panics on ambiguous projections #10403multiple_unsafe_ops_per_block
: Fix ICE when calling a function-like object in an unsafe block #10405
Others
clippy-driver
now searches parent directories forclippy.toml
files #10592- Fixed a deserialization error for the
array-size-threshold
config value #10423
Rust 1.69
Released 2023-04-20
View all 72 merged pull requests
New Lints
no_mangle_with_rust_abi
#10369significant_drop_tightening
#10163suspicious_command_arg_space
#10317let_underscore_untyped
#10356question_mark_used
#10342extra_unused_type_parameters
#10028impl_trait_in_params
10197transmute_int_to_non_zero
#10360multiple_unsafe_ops_per_block
#10206
Moves and Deprecations
- Moved
uninlined_format_args
topedantic
(Now allow-by-default) #10265 - Moved
unchecked_duration_subtraction
topedantic
(Now allow-by-default) #10194
Enhancements
arithmetic_side_effects
: No longer lints if safe constant values are used. #10310needless_lifetimes
: Now works in local macros #10257unused_io_amount
: Now detects usages ofis_ok
andis_err
#10225missing_docs_in_private_items
: Added new configurationmissing-docs-in-crate-items
to lint on items visible within the current crate. For example,pub(crate)
items. #10303almost_swapped
: Now detects almost swaps usinglet
statements #10177wildcard_enum_match_arm
: Now lints missing private variants, for local enums #10250
False Positive Fixes
explicit_auto_deref
: Now considers projections when determining if auto deref is applicable #10386manual_let_else
: Now considers side effects of branches before linting #10336uninlined_format_args
: No longer lints for arguments with generic parameters #10343needless_lifetimes
: No longer lints signatures in macros if the lifetime is a metavariable #10380len_without_is_empty
: No longer lints iflen
as a non-default signature #10255unusual_byte_groupings
: Relaxed the required restrictions for specific sizes to reduce false positives #10353manual_let_else
: No longer lintsif-else
blocks if they can divergent #10332expect_used
,unwrap_used
,dbg_macro
,print_stdout
,print_stderr
: No longer lint in test functions ifallow-expect-in-tests
is set #10391unnecessary_safety_comment
: No longer lints code inside macros #10106never_loop
: No longer lints statements following break statements for outer blocks. #10311
Suggestion Fixes/Improvements
box_default
: The suggestion now includes the type for trait objects when needed #10382cast_possible_truncation
: Now suggests usingtry_from
or allowing the lint #10038invalid_regex
: Regex errors for non-literals or regular strings containing escape sequences will now show the complete error #10231transmutes_expressible_as_ptr_casts
: The suggestion now works if the base type is borrowed #10193needless_return
: Now removes all semicolons on the same line #10187suspicious_to_owned
: The suggestion now shows all options clearly #10295bytes_nth
: Now suggests the correct replacement based on the context #10361bool_assert_comparison
: The suggestion is now machine applicable #10218cast_possible_truncation
: Corrected the lint name in the help message #10330needless_return
: The suggestion now works on if sequences #10345needless_lifetimes
: The suggestion is now machine applicable #10222map_entry
: The suggestion no longer expands macros #10346
ICE Fixes
needless_pass_by_value
: Fixed an ICE caused by how late bounds were handled #10328needless_borrow
: No longer panics on ambiguous projections #10403
Documentation Improvements
- All configurations are now documented in the Clippy Book #10199
Rust 1.68
Released 2023-03-09
View all 76 merged pull requests
New Lints
permissions_set_readonly_false
#10063almost_complete_range
#10043size_of_ref
#10098semicolon_outside_block
#9826semicolon_inside_block
#9826transmute_null_to_fn
#10099fn_null_check
#10099
Moves and Deprecations
- Moved
manual_clamp
tonursery
(Now allow-by-default) #10101 - Moved
mutex_atomic
torestriction
#10115 - Renamed
derive_hash_xor_eq
toderived_hash_with_manual_eq
#10184
Enhancements
collapsible_str_replace
: Now takes MSRV into consideration. The minimal version is 1.58 #10047unused_self
: No longer lints, if the method body contains atodo!()
call #10166derivable_impls
: Now suggests derivingDefault
for enums with default unit variants #10161arithmetic_side_effects
: Added two new config valuesarithmetic-side-effects-allowed-binary
andarithmetic-side-effects-allowed-unary
to allow operation on user types #9840large_const_arrays
,large_stack_arrays
: avoid integer overflow when calculating total array size #10103indexing_slicing
: add new configsuppress-restriction-lint-in-const
to enable restriction lints, even if the suggestion might not be applicable #9920needless_borrow
,redundant_clone
: Now track references better and detect more cases #9701derived_hash_with_manual_eq
: Now allows#[derive(PartialEq)]
with customHash
implementations #10184manual_is_ascii_check
: Now detects ranges with.contains()
calls #10053transmuting_null
: Now detectsconst
pointers to all types #10099needless_return
: Now detects more cases for returns of owned values #10110
False Positive Fixes
field_reassign_with_default
: No longer lints cases, where values are initializes from closures capturing struct values #10143seek_to_start_instead_of_rewind
: No longer lints, if the return ofseek
is used. #10096manual_filter
: Now ignores if expressions where the else branch has side effects or doesn't returnNone
#10091implicit_clone
: No longer lints if the type doesn't implement clone #10022match_wildcard_for_single_variants
: No longer lints on wildcards with a guard #10056drop_ref
: No longer lints idiomatic expression inmatch
arms #10142arithmetic_side_effects
: No longer lints on corner cases with negative number literals #9867string_lit_as_bytes
: No longer lints in scrutinies ofmatch
statements #10012manual_assert
: No longer lints inelse if
statements #10013needless_return
: don't lint when usingdo yeet
#10109- All lints: No longer lint in enum discriminant values when the suggestion won't work in a const context #10008
single_element_loop
: No longer lints, if the loop contains abreak
orcontinue
#10162uninlined_format_args
: No longer suggests inlining arguments inassert!
anddebug_assert!
macros before 2021 edition #10055explicit_counter_loop
: No longer ignores counter changes aftercontinue
expressions #10094from_over_into
: No longer lints on opaque types #9982expl_impl_clone_on_copy
: No longer lints on#[repr(packed)]
structs with generic parameters #10189
Suggestion Fixes/Improvements
zero_ptr
: Now suggestscore::
paths forno_std
crates #10023useless_conversion
: Now suggests removing calls tointo_iter()
on an expression implementingIterator
#10020box_default
: The suggestion now uses short paths #10153default_trait_access
,clone_on_copy
: The suggestion now uses short paths #10160comparison_to_empty
: The suggestion now removes unused deref operations #9962manual_let_else
: Suggestions for or-patterns now include required brackets. #9966match_single_binding
: suggestion no longer introduces unneeded semicolons #10060case_sensitive_file_extension_comparisons
: Now displays a suggestion withPath
#10107empty_structs_with_brackets
: The suggestion is no longer machine applicable, to avoid errors when accessing struct fields #10141identity_op
: Removes borrows in the suggestion when needed #10004suboptimal_flops
: The suggestion now includes parentheses when required #10113iter_kv_map
: Now handlesmut
and reference annotations in the suggestion #10159redundant_static_lifetimes
: The suggestion no longer removesmut
from references #10006
ICE Fixes
new_ret_no_self
: Now avoids a stack overflow forimpl Trait
types #10086unnecessary_to_owned
: Now handles compiler generated notes better #10027
Others
SYSROOT
and--sysroot
can now be set at the same time #10149- Fix error when providing an
array-size-threshold
inclippy.toml
#10423
Rust 1.67
Released 2023-01-26
View all 104 merged pull requests
New Lints
seek_from_current
#9681from_raw_with_void_ptr
#9690misnamed_getters
#9770seek_to_start_instead_of_rewind
#9667suspicious_xor_used_as_pow
#9506unnecessary_safety_doc
#9822unchecked_duration_subtraction
#9570manual_is_ascii_check
#9765unnecessary_safety_comment
#9851let_underscore_future
#9760manual_let_else
#8437
Moves and Deprecations
- Moved
needless_collect
tonursery
(Now allow-by-default) #9705 - Moved
or_fun_call
tonursery
(Now allow-by-default) #9829 - Uplifted
let_underscore_lock
into rustc #9697 - Uplifted
let_underscore_drop
into rustc #9697 - Moved
bool_to_int_with_if
topedantic
(Now allow-by-default) #9830 - Move
index_refutable_slice
topedantic
(Now warn-by-default) #9975 - Moved
manual_clamp
tonursery
(Now allow-by-default) #10101
Enhancements
- The scope of
#![clippy::msrv]
is now tracked correctly #9924 #[clippy::msrv]
can now be used as an outer attribute #9860- Clippy will now avoid Cargo's cache, if
Cargo.toml
orclippy.toml
have changed #9707 uninlined_format_args
: Added a new configallow-mixed-uninlined-format-args
to allow the lint, if only some arguments can be inlined #9865needless_lifetimes
: Now provides suggests for individual lifetimes #9743needless_collect
: Now detects needlessis_empty
andcontains
calls #8744blanket_clippy_restriction_lints
: Now lints, ifclippy::restriction
is enabled via the command line arguments #9755mutable_key_type
: Now has theignore-interior-mutability
configuration, to add types which should be ignored by the lint #9692uninlined_format_args
: Now works for multilineformat!
expressions #9945cognitive_complexity
: Now works for async functions #9828 #9836vec_box
: Now avoids an off-by-one error when using thevec-box-size-threshold
configuration #9848never_loop
: Now correctly handles breaks in nested labeled blocks #9858 #9837disallowed_methods
,disallowed_types
,disallowed_macros
: Now correctly resolve paths, if a crate is used multiple times with different versions #9800disallowed_methods
: Can now be used for local methods #9800print_stdout
,print_stderr
: Can now be enabled in test with theallow-print-in-tests
config value #9797from_raw_with_void_ptr
: Now works forRc
,Arc
,alloc::rc::Weak
andalloc::sync::Weak
types. #9700needless_borrowed_reference
: Now works for struct and tuple patterns with wildcards #9855or_fun_call
: Now supportsmap_or
methods #9689unwrap_used
,expect_used
: No longer lints in test code #9686fn_params_excessive_bools
: Is now emitted with the lint level at the linted function #9698
False Positive Fixes
new_ret_no_self
: No longer lints whenimpl Trait<Self>
is returned #9733unnecessary_lazy_evaluations
: No longer lints, if the type has a significant drop #9750option_if_let_else
: No longer lints, if any arm has guard #9747explicit_auto_deref
: No longer lints, if the target type is a projection with generic arguments #9813unnecessary_to_owned
: No longer lints, if the suggestion effects types #9796needless_borrow
: No longer lints, if the suggestion is affected byDeref
#9674unused_unit
: No longer lints, if lifetimes are bound to the return type #9849mut_mut
: No longer lints cases with unsized mutable references #9835bool_to_int_with_if
: No longer lints in const context #9738use_self
: No longer lints in macros #9704unnecessary_operation
: No longer lints, if multiple macros are involved #9981allow_attributes_without_reason
: No longer lints inside external macros #9630question_mark
: No longer lints forif let Err()
with anelse
branch #9722unnecessary_cast
: No longer lints if the identifier and cast originate from different macros #9980arithmetic_side_effects
: Now detects operations with associated constants #9592explicit_auto_deref
: No longer lints, if the initial value is not a reference or reference receiver #9997module_name_repetitions
,single_component_path_imports
: Now handle#[allow]
attributes correctly #9879bool_to_int_with_if
: No longer lintsif let
statements #9714needless_borrow
: No longer lints,if
-else
-statements that require the borrow #9791needless_borrow
: No longer lints borrows, if moves were illegal #9711manual_swap
: No longer lints in const context #9871
Suggestion Fixes/Improvements
missing_safety_doc
,missing_errors_doc
,missing_panics_doc
: No longer show the entire item in the lint emission. #9772needless_lifetimes
: Only suggests'_
when it's applicable #9743use_self
: Now suggests full paths correctly #9726redundant_closure_call
: Now correctly deals with macros during suggestion creation #9987unnecessary_cast
: Suggestions now correctly deal with references #9996unnecessary_join
: Suggestions now correctly use turbofish operators #9779equatable_if_let
: Can now suggestmatches!
replacements #9368string_extend_chars
: Suggestions now correctly work forstr
slices #9741redundant_closure_for_method_calls
: Suggestions now include angle brackets and generic arguments if needed #9745manual_let_else
: Suggestions no longer expand macro calls #9943infallible_destructuring_match
: Suggestions now preserve references #9850result_large_err
: The error now shows the largest enum variant #9662needless_return
: Suggestions are now formatted better #9967unused_rounding
: The suggestion now preserves the original float literal notation #9870
ICE Fixes
result_large_err
: Fixed ICE for empty enums #10007redundant_allocation
: Fixed ICE for types with bounded variables #9773unused_rounding
: Fixed ICE, if_
was used as a separator #10001
Rust 1.66
Released 2022-12-15
View all 116 merged pull requests
New Lints
manual_clamp
#9484missing_trait_methods
#9670unused_format_specs
#9637iter_kv_map
#9409manual_filter
#9451box_default
#9511implicit_saturating_add
#9549as_ptr_cast_mut
#9572disallowed_macros
#9495partial_pub_fields
#9658uninlined_format_args
#9233cast_nan_to_int
#9617
Moves and Deprecations
positional_named_format_parameters
was uplifted to rustc under the new namenamed_arguments_used_positionally
#8518- Moved
implicit_saturating_sub
tostyle
(Now warn-by-default) #9584 - Moved
derive_partial_eq_without_eq
tonursery
(now allow-by-default) #9536
Enhancements
nonstandard_macro_braces
: Now includesmatches!()
in the default lint config #9471suboptimal_flops
: Now supports multiplication and subtraction operations #9581arithmetic_side_effects
: Now detects cases with literals behind references #9587upper_case_acronyms
: Now also checks enum names #9580needless_borrowed_reference
: Now lints nested patterns #9573unnecessary_cast
: Now works for non-trivial non-literal expressions #9576arithmetic_side_effects
: Now detects operations with custom types #9559disallowed_methods
,disallowed_types
: Not correctly lints types, functions and macros with the same path #9495self_named_module_files
,mod_module_files
: Now take remapped path prefixes into account #9475bool_to_int_with_if
: Now detects the inverse if case #9476
False Positive Fixes
arithmetic_side_effects
: Now allows operations that can't overflow #9474unnecessary_lazy_evaluations
: No longer lints in external macros #9486needless_borrow
,explicit_auto_deref
: No longer lint on unions that require the reference #9490almost_complete_letter_range
: No longer lints in external macros #9467drop_copy
: No longer lints on idiomatic cases in match arms #9491question_mark
: No longer lints in const context #9487collapsible_if
: Suggestion now work in macros #9410std_instead_of_core
: No longer triggers on unstable modules #9545unused_peekable
: No longer lints, if the peak is done in a closure or function #9465useless_attribute
: No longer lints on#[allow]
attributes forunsafe_removed_from_name
#9593unnecessary_lazy_evaluations
: No longer suggest switching to early evaluation when type has customDrop
implementation #9551unnecessary_cast
: No longer lints on negative hexadecimal literals when cast as floats #9609use_self
: No longer lints in proc macros #9454never_loop
: Now takeslet ... else
statements into consideration. #9496default_numeric_fallback
: Now ignores constants #9636uninit_vec
: No longer lintsVec::set_len(0)
#9519arithmetic_side_effects
: Now ignores references to integer types #9507large_stack_arrays
: No longer lints inside static items #9466ref_option_ref
: No longer lints if the inner reference is mutable #9684ptr_arg
: No longer lints if the argument is used as an incomplete trait object #9645should_implement_trait
: Now also works fordefault
methods #9546
Suggestion Fixes/Improvements
derivable_impls
: The suggestion is now machine applicable #9429match_single_binding
: The suggestion now handles scrutinies with side effects better #9601zero_prefixed_literal
: Only suggests using octal numbers, if this is possible #9652rc_buffer
: The suggestion is no longer machine applicable to avoid semantic changes #9633print_literal
,write_literal
,uninlined_format_args
: The suggestion now ignores comments after the macro call. #9586expect_fun_call
:Improved the suggestion forformat!
calls with captured variables #9586nonstandard_macro_braces
: The suggestion is now machine applicable and will no longer replace brackets inside the macro argument. #9499from_over_into
: The suggestion is now a machine applicable and contains explanations #9649needless_return
: The automatic suggestion now removes all required semicolons #9497to_string_in_format_args
: The suggestion now keeps parenthesis around values #9590manual_assert
: The suggestion now preserves comments #9479redundant_allocation
: The suggestion applicability is now markedMaybeIncorrect
to avoid semantic changes #9634assertions_on_result_states
: The suggestion has been corrected, for cases where theassert!
is not in a statement. #9453nonminimal_bool
: The suggestion no longer expands macros #9457collapsible_match
: Now specifies field names, when a struct is destructed #9685unnecessary_cast
: The suggestion now adds parenthesis for negative numbers #9577redundant_closure
: The suggestion now works forimpl FnMut
arguments #9556
ICE Fixes
unnecessary_to_owned
: Avoid ICEs in favor of false negatives if information is missing #9505 #10027manual_range_contains
: No longer ICEs on values behind references #9627needless_pass_by_value
: No longer ICEs on unsizeddyn Fn
arguments #9531*_interior_mutable_const
lints: no longer ICE on const unions containing!Freeze
types #9539
Others
- Released
rustc_tools_util
for version information onCrates.io
. (Further adjustments will not be published as part of this changelog)
Rust 1.65
Released 2022-11-03
View all 86 merged pull requests
Important Changes
- Clippy now has an
--explain <LINT>
command to show the lint description in the console #8952
New Lints
unused_peekable
#9258collapsible_str_replace
#9269manual_string_new
#9295iter_on_empty_collections
#9187iter_on_single_items
#9187bool_to_int_with_if
#9412multi_assignments
#9379result_large_err
#9373partialeq_to_none
#9288suspicious_to_owned
#8984cast_slice_from_raw_parts
#9247manual_instant_elapsed
#9264
Moves and Deprecations
- Moved
significant_drop_in_scrutinee
tonursery
(now allow-by-default) #9302 - Rename
logic_bug
tooverly_complex_bool_expr
#9306 - Rename
arithmetic
toarithmetic_side_effects
#9443 - Moved
only_used_in_recursion
to complexity (now warn-by-default) #8804 - Moved
assertions_on_result_states
to restriction (now allow-by-default) #9273 - Renamed
blacklisted_name
todisallowed_names
#8974
Enhancements
option_if_let_else
: Now also checks for match expressions #8696explicit_auto_deref
: Now lints on implicit returns in closures #9126needless_borrow
: Now considers trait implementations #9136suboptimal_flops
,imprecise_flops
: Now lint on constant expressions #9404if_let_mutex
: Now detects mutex behind references and warns about deadlocks #9318
False Positive Fixes
unit_arg
default_trait_access
missing_docs_in_private_items
: No longer trigger in code generated from proc-macros #8694unwrap_used
: Now lints uses ofunwrap_err
#9338expect_used
: Now lints uses ofexpect_err
#9338transmute_undefined_repr
: Now longer lints if the first field is compatible with the other type #9287unnecessary_to_owned
: No longer lints, if type change cased errors in the caller function #9424match_like_matches_macro
: No longer lints, if there are comments inside the match expression #9276partialeq_to_none
: No longer trigger in code generated from macros #9389arithmetic_side_effects
: No longer lints expressions that only use literals #9365explicit_auto_deref
: Now ignores references on block expressions when the type isSized
, ondyn Trait
returns and when the suggestion is non-trivial #9126trait_duplication_in_bounds
: Now better tracks bounds to avoid false positives #9167format_in_format_args
: Now suggests cases where the result is formatted again #9349only_used_in_recursion
: No longer lints on function without recursions and takes external functions into account #8804missing_const_for_fn
: No longer lints in proc-macros #9308non_ascii_literal
: Allow non-ascii comments in tests and make sure#[allow]
attributes work in tests #9327question_mark
: No longer lintif let
s with subpatterns #9348needless_collect
: No longer lints in loops #8992mut_mutex_lock
: No longer lints if the mutex is behind an immutable reference #9418needless_return
: Now ignores returns with arguments #9381range_plus_one
,range_minus_one
: Now ignores code with macros #9446assertions_on_result_states
: No longer lints on the unit type #9273
Suggestion Fixes/Improvements
unwrap_or_else_default
: Now suggestsunwrap_or_default()
for empty strings #9421if_then_some_else_none
: Now also suggestsbool::then_some
#9289redundant_closure_call
: The suggestion now works for async closures #9053suboptimal_flops
: Now suggests parenthesis when they are required #9394case_sensitive_file_extension_comparisons
: Now suggestsmap_or(..)
instead ofmap(..).unwrap_or
#9341- Deprecated configuration values can now be updated automatically #9252
or_fun_call
: Now suggestEntry::or_default
forEntry::or_insert(Default::default())
#9342unwrap_used
: Only suggestsexpect
ifexpect_used
is allowed #9223
ICE Fixes
- Fix ICE in
useless_format
for literals #9406 - Fix infinite loop in
vec_init_then_push
#9441 - Fix ICE when reading literals with weird proc-macro spans #9303
Rust 1.64
Released 2022-09-22
View all 110 merged pull requests
New Lints
arithmetic_side_effects
#9130invalid_utf8_in_unchecked
#9105assertions_on_result_states
#9225manual_find
#8649manual_retain
#8972default_instead_of_iter_empty
#8989manual_rem_euclid
#9031obfuscated_if_else
#9148std_instead_of_core
#9103std_instead_of_alloc
#9103alloc_instead_of_core
#9103explicit_auto_deref
#8355
Moves and Deprecations
- Moved
format_push_string
torestriction
(now allow-by-default) #9161
Enhancements
significant_drop_in_scrutinee
: Now gives more context in the lint message #8981single_match
,single_match_else
: Now catches moreOption
cases #8985unused_async
: Now works for async methods #9025manual_filter_map
,manual_find_map
: Now lint more expressions #8958question_mark
: Now works for simpleif let
expressions #8356undocumented_unsafe_blocks
: Now finds comments before the start of closures #9117trait_duplication_in_bounds
: Now catches duplicate bounds in where clauses #8703shadow_reuse
,shadow_same
,shadow_unrelated
: Now lint in const blocks #9124slow_vector_initialization
: Now detects cases withvec.capacity()
#8953unused_self
: Now respects theavoid-breaking-exported-api
config option #9199box_collection
: Now supports all std collections #9170
False Positive Fixes
significant_drop_in_scrutinee
: Now ignores calls toIntoIterator::into_iter
#9140while_let_loop
: Now ignores cases when the significant drop order would change #8981branches_sharing_code
: Now ignores cases where moved variables have a significant drop or variable modifications can affect the conditions #9138let_underscore_lock
: Now ignores bindings that aren't locked #8990trivially_copy_pass_by_ref
: Now tracks lifetimes and ignores cases where unsafe pointers are used #8639let_unit_value
: No longer ignores#[allow]
attributes on the value #9082declare_interior_mutable_const
: Now ignores thethread_local!
macro #9015if_same_then_else
: Now ignores branches withtodo!
andunimplemented!
#9006enum_variant_names
: Now ignores names with_
prefixes #9032let_unit_value
: Now ignores cases, where the unit type is manually specified #9056match_same_arms
: Now ignores branches withtodo!
#9207assign_op_pattern
: Ignores cases that break borrowing rules #9214extra_unused_lifetimes
: No longer triggers in derive macros #9037mismatching_type_param_order
: Now ignores complicated generic parameters #9146equatable_if_let
: No longer lints in macros #9074new_without_default
: Now ignores generics and lifetime parameters onfn new
#9115needless_borrow
: Now ignores cases that result in the execution of different traits #9096declare_interior_mutable_const
: No longer triggers in thread-local initializers #9246
Suggestion Fixes/Improvements
type_repetition_in_bounds
: The suggestion now works with maybe bounds #9132transmute_ptr_to_ref
: Now suggestspointer::cast
when possible #8939useless_format
: Now suggests the correct variable name #9237or_fun_call
: The lint emission will now only span over theunwrap_or
call #9144neg_multiply
: Now suggests adding parentheses around suggestion if needed #9026unnecessary_lazy_evaluations
: Now suggest forbool::then_some
for lazy evaluation #9099manual_flatten
: Improved message for long code snippets #9156explicit_counter_loop
: The suggestion is now machine applicable #9149needless_borrow
: Now keeps parentheses around fields, when needed #9210while_let_on_iterator
: The suggestion now works inFnOnce
closures #9134
ICE Fixes
- Fix ICEs related to
#![feature(generic_const_exprs)]
usage #9241 - Fix ICEs related to reference lints #9093
question_mark
: Fix ICE on zero field tuple structs #9244
Documentation Improvements
needless_option_take
: Now includes a "What it does" and "Why is this bad?" section. #9022
Others
- Using
--cap-lints=allow
and only--force-warn
ing some will now work with Clippy's driver #9036 - Clippy now tries to read the
rust-version
fromCargo.toml
to identify the minimum supported rust version #8774
Rust 1.63
Released 2022-08-11
View all 91 merged pull requests
New Lints
borrow_deref_ref
#7930doc_link_with_quotes
#8385no_effect_replace
#8754rc_clone_in_vec_init
#8769derive_partial_eq_without_eq
#8796mismatching_type_param_order
#8831duplicate_mod
#8832unused_rounding
#8866get_first
#8882swap_ptr_to_ref
#8916almost_complete_letter_range
#8918needless_parens_on_range_literals
#8933as_underscore
#8934
Moves and Deprecations
- Rename
eval_order_dependence
tomixed_read_write_in_expression
, move tonursery
#8621
Enhancements
undocumented_unsafe_blocks
: Now also lints on unsafe trait implementations #8761empty_line_after_outer_attr
: Now also lints on argumentless macros #8790expect_used
: Now can be disabled in tests with theallow-expect-in-tests
option #8802unwrap_used
: Now can be disabled in tests with theallow-unwrap-in-tests
option #8802disallowed_methods
: Now also lints indirect usages #8852get_last_with_len
: Now also lintsVecDeque
and any deref to slice #8862manual_range_contains
: Now also lints on chains of&&
and||
#8884rc_clone_in_vec_init
: Now also lints onWeak
#8885dbg_macro
: Introduceallow-dbg-in-tests
config option #8897use_self
: Now also lints onTupleStruct
andStruct
patterns #8899manual_find_map
andmanual_filter_map
: Now also lints on more complex method chains insidemap
#8930needless_return
: Now also lints on macro expressions in return statements #8932doc_markdown
: Users can now indicate, that thedoc-valid-idents
config should extend the default and not replace it #8944disallowed_names
: Users can now indicate, that thedisallowed-names
config should extend the default and not replace it #8944never_loop
: Now checks forcontinue
in struct expression #9002
False Positive Fixes
useless_transmute
: No longer lints on types with erased regions #8564vec_init_then_push
: No longer lints when further extended #8699cmp_owned
: No longer lints onFrom::from
forCopy
types #8807redundant_allocation
: No longer lints on fat pointers that would become thin pointers #8813derive_partial_eq_without_eq
:empty_line_after_outer_attr
: No longer lints empty lines in inner string values #8892branches_sharing_code
: No longer lints when using different binding names #8901significant_drop_in_scrutinee
: No longer lints on Try?
andawait
desugared expressions #8902checked_conversions
: No longer lints inconst
contexts #8907iter_overeager_cloned
: No longer lints on.cloned().flatten()
whenT::Item
doesn't implementIntoIterator
#8960
Suggestion Fixes/Improvements
vec_init_then_push
: Suggest to removemut
binding when possible #8699manual_range_contains
: Fix suggestion for integers with different signs #8763identity_op
: Add parenthesis to suggestions where required #8786cast_lossless
: No longer gives wrong suggestion onusize
/isize
->f64
#8778rc_clone_in_vec_init
: Add suggestion #8814- The "unknown field" error messages for config files now wraps the field names #8823
cast_abs_to_unsigned
: Do not remove cast if it's required #8876significant_drop_in_scrutinee
: Improve lint message for types that are not references and not trivially clone-able #8902for_loops_over_fallibles
: Now suggests the correct variant ofiter()
,iter_mut()
orinto_iter()
#8941
ICE Fixes
- Fix ICE in
let_unit_value
when calling astatic
/const
callable type #8835 - Fix ICEs on callable
static
/const
s #8896 needless_late_init
#8912- Fix ICE in shadow lints #8913
Documentation Improvements
- Clippy has a Book now! #7359
- Add a copy lint name-button to Clippy's lint list #8839
- Display past names of renamed lints on Clippy's lint list #8843
- Add the ability to show the lint output in the lint list #8947
Rust 1.62
Released 2022-06-30
View all 90 merged pull requests
New Lints
large_include_file
#8727cast_abs_to_unsigned
#8635err_expect
#8606unnecessary_owned_empty_strings
#8660empty_structs_with_brackets
#8594crate_in_macro_def
#8576needless_option_take
#8665bytes_count_to_len
#8711is_digit_ascii_radix
#8624await_holding_invalid_type
#8707trim_split_whitespace
#8575pub_use
#8670format_push_string
#8626empty_drop
#8571drop_non_drop
#8630forget_non_drop
#8630
Moves and Deprecations
- Move
only_used_in_recursion
tonursery
(now allow-by-default) #8783 - Move
stable_sort_primitive
topedantic
(now allow-by-default) #8716
Enhancements
- Remove overlap between
manual_split_once
andneedless_splitn
#8631 map_identity
: Now checks for needlessmap_err
#8487extra_unused_lifetimes
: Now checks for impl lifetimes #8737cast_possible_truncation
: Now catches more cases with larger shift or divide operations #8687identity_op
: Now checks for modulo expressions #8519panic
: No longer lint in constant context #8592manual_split_once
: Now lints manual iteration ofsplitn
#8717self_named_module_files
,mod_module_files
: Now handle relative module paths #8611unsound_collection_transmute
: Now has better size and alignment checks #8648unnested_or_patterns
: Ignore cases, where the suggestion would be longer #8619
False Positive Fixes
rest_pat_in_fully_bound_structs
: Now ignores structs marked with#[non_exhaustive]
#8690needless_late_init
: No longer lintsif let
statements,let mut
bindings or instances that changes the drop order significantly #8617unnecessary_cast
: No longer lints to casts to aliased or non-primitive types #8596init_numbered_fields
: No longer lints type aliases #8780needless_option_as_deref
: No longer lints foras_deref_mut
onOption
values that can't be moved #8646mistyped_literal_suffixes
: Now ignores float literals without an exponent #8742undocumented_unsafe_blocks
: Now ignores unsafe blocks from proc-macros and works better for sub-expressions #8450same_functions_in_if_condition
: Now allows different constants, even if they have the same value #8673needless_match
: Now checks for more complex types and ignores type coercion #8549assertions_on_constants
: Now ignores constants fromcfg!
macros #8614indexing_slicing
: Fix false positives with constant indices in #8588iter_with_drain
: Now ignores iterator references #8668useless_attribute
: Now allowsredundant_pub_crate
onuse
items #8743cast_ptr_alignment
: Now ignores expressions, when used for unaligned reads and writes #8632wrong_self_convention
: Now allows&mut self
and no self as arguments foris_*
methods #8738mut_from_ref
: Only lint in unsafe code #8647redundant_pub_crate
: Now allows macro exports #8736needless_match
: Ignores cases where the else block expression is different #8700transmute_int_to_char
: Now allows transmutations inconst
code #8610manual_non_exhaustive
: Ignores cases, where the enum value is used #8645redundant_closure
: Now ignores coerced closure #8431identity_op
: Is now ignored in cases where extra brackets would be needed #8730let_unit_value
: Now ignores cases which are used for type inference #8563
Suggestion Fixes/Improvements
manual_split_once
: Fixed incorrect suggestions for single result accesses #8631bytes_nth
: Fix typos in the diagnostic message #8403mistyped_literal_suffixes
: Now suggests the correct integer types #8742unnecessary_to_owned
: Fixed suggestion based on the configured msrv #8692single_element_loop
: Improve lint for Edition 2021 arrays #8616manual_bits
: Now includes a cast for proper type conversion, when needed #8677option_map_unit_fn
,result_map_unit_fn
: Fix some incorrect suggestions #8584collapsible_else_if
: Add whitespace in suggestion #8729transmute_bytes_to_str
: Now suggestfrom_utf8_unchecked
inconst
context #8612map_clone
: Improve message and suggestion based on the msrv #8688needless_late_init
: Now shows thelet
statement where it was first initialized #8779
ICE Fixes
only_used_in_recursion
#8691cast_slice_different_sizes
#8720iter_overeager_cloned
#8602undocumented_unsafe_blocks
#8686
Rust 1.61
Released 2022-05-19
View all 60 merged pull requests
New Lints
only_used_in_recursion
#8422cast_enum_truncation
#8381missing_spin_loop
#8174deref_by_slicing
#8218needless_match
#8471allow_attributes_without_reason
(Requires#![feature(lint_reasons)]
) #8504print_in_format_impl
#8253unnecessary_find_map
#8489or_then_unwrap
#8561unnecessary_join
#8579iter_with_drain
#8483cast_enum_constructor
#8562cast_slice_different_sizes
#8445
Moves and Deprecations
- Moved
transmute_undefined_repr
tonursery
(now allow-by-default) #8432 - Moved
try_err
torestriction
#8544 - Move
iter_with_drain
tonursery
#8541 - Renamed
to_string_in_display
torecursive_format_impl
#8188
Enhancements
dbg_macro
: The lint level can now be set with crate attributes and works inside macros #8411ptr_as_ptr
: Now works inside macros #8442use_self
: Now works for variants in match expressions #8456await_holding_lock
: Now lints forparking_lot::{Mutex, RwLock}
#8419recursive_format_impl
: Now checks for format calls onself
#8188
False Positive Fixes
new_without_default
: No longer lints fornew()
methods with#[doc(hidden)]
#8472transmute_undefined_repr
: No longer lints for single field structs with#[repr(C)]
, generic parameters, wide pointers, unions, tuples and allow several forms of type erasure #8425 #8553 #8440 #8547match_single_binding
,match_same_arms
,match_as_ref
,match_bool
: No longer lintmatch
expressions withcfg
ed arms #8443single_component_path_imports
: No longer lint on macros #8537ptr_arg
: Allow&mut
arguments forCow<_>
#8552needless_borrow
: No longer lints for method calls #8441match_same_arms
: Now ensures that interposing arm patterns don't overlap #8232default_trait_access
: Now allowsDefault::default
in update expressions #8433
Suggestion Fixes/Improvements
redundant_slicing
: Fixed suggestion for a method calls #8218map_flatten
: Long suggestions will now be split up into two help messages #8520unnecessary_lazy_evaluations
: Now shows suggestions for longer code snippets #8543unnecessary_sort_by
: Now suggestsReverse
including the path #8462search_is_some
: More suggestions are nowMachineApplicable
#8536
Documentation Improvements
new_without_default
: Documentpub
requirement for the struct and fields #8429
Rust 1.60
Released 2022-04-07
View all 73 merged pull requests
New Lints
single_char_lifetime_names
#8236iter_overeager_cloned
#8203transmute_undefined_repr
#8398default_union_representation
#8289manual_bits
#8213borrow_as_ptr
#8210
Moves and Deprecations
- Moved
disallowed_methods
anddisallowed_types
tostyle
(now warn-by-default) #8261 - Rename
ref_in_deref
toneedless_borrow
#8217 - Moved
mutex_atomic
tonursery
(now allow-by-default) #8260
Enhancements
ptr_arg
: Now takes the argument usage into account and lints for mutable references #8271unused_io_amount
: Now supports async read and write traits #8179while_let_on_iterator
: Improved detection to catch more cases #8221trait_duplication_in_bounds
: Now covers trait functions withSelf
bounds #8252unwrap_used
: Now works for.get(i).unwrap()
and.get_mut(i).unwrap()
#8372map_clone
: The suggestion takesmsrv
into account #8280manual_bits
andborrow_as_ptr
: Now track theclippy::msrv
attribute #8280disallowed_methods
: Now works for methods on primitive types #8112not_unsafe_ptr_arg_deref
: Now works for type aliases #8273needless_question_mark
: Now works for async functions #8311iter_not_returning_iterator
: Now handles type projections #8228wrong_self_convention
: Now detects wrongself
references in more cases #8208single_match
: Now works formatch
statements with tuples #8322
False Positive Fixes
erasing_op
: No longer triggers if the output type changes #8204if_same_then_else
: No longer triggers forif let
statements #8297manual_memcpy
: No longer lints onVecDeque
#8226trait_duplication_in_bounds
: Now takes path segments into account #8315deref_addrof
: No longer lints when the dereference or borrow occurs in different a context #8268type_repetition_in_bounds
: Now checks for full equality to prevent false positives #8224ptr_arg
: No longer lint for mutable references in traits #8369implicit_clone
: No longer lints for double references #8231needless_lifetimes
: No longer lints lifetimes for explicitself
types #8278op_ref
: No longer lints inBinOp
impl if that can cause recursion #8298enum_variant_names
: No longer triggers for empty variant names #8329redundant_closure
: No longer lints forArc<T>
orRc<T>
#8193iter_not_returning_iterator
: No longer lints on trait implementations but therefore on trait definitions #8228single_match
: No longer lints on exhaustive enum patterns without a wildcard #8322manual_swap
: No longer lints on cases that involve automatic dereferences #8220useless_format
: Now works for implicit named arguments #8295
Suggestion Fixes/Improvements
needless_borrow
: Prevent mutable borrows being moved and suggest removing the borrow on method calls #8217chars_next_cmp
: Correctly escapes the suggestion #8376explicit_write
: Add suggestions forwrite!
s with format arguments #8365manual_memcpy
: Suggestscopy_from_slice
when applicable #8226or_fun_call
: Improved suggestion display for long arguments #8292unnecessary_cast
: Now correctly includes the sign #8350cmp_owned
: No longer flips the comparison order #8299explicit_counter_loop
: Now correctly suggestsiter()
on references #8382
ICE Fixes
Documentation Improvements
map_flatten
: Add documentation for theOption
type #8354- Document that Clippy's driver might use a different code generation than rustc #8037
- Clippy's lint list will now automatically focus the search box #8343
Others
- Clippy now warns if we find multiple Clippy config files exist #8326
Rust 1.59
Released 2022-02-24
View all 94 merged pull requests
New Lints
index_refutable_slice
#7643needless_splitn
#7896unnecessary_to_owned
#7978needless_late_init
#7995octal_escapes
#8007return_self_not_must_use
#8071init_numbered_fields
#8170
Moves and Deprecations
- Move
if_then_panic
topedantic
and rename tomanual_assert
(now allow-by-default) #7810 - Rename
disallow_type
todisallowed_types
anddisallowed_method
todisallowed_methods
#7984 - Move
map_flatten
tocomplexity
(now warn-by-default) #8054
Enhancements
match_overlapping_arm
: Fix false negative where after included ranges, overlapping ranges weren't linted anymore #7909deprecated_cfg_attr
: Now takes the specified MSRV into account #7944cast_lossless
: Now also lints forbool
to integer casts #7948let_underscore_lock
: Also emit lints for theparking_lot
crate #7957needless_borrow
#7977- Lint when a borrow is auto-dereffed more than once
- Lint in the trailing expression of a block for a match arm
strlen_on_c_strings
8001- Lint when used without a fully-qualified path
- Suggest removing the surrounding unsafe block when possible
non_ascii_literal
: Now also lints onchar
s, not juststring
s #8034single_char_pattern
: Now also lints onsplit_inclusive
,split_once
,rsplit_once
,replace
, andreplacen
#8077unwrap_or_else_default
: Now also lints onstd
constructors likeVec::new
,HashSet::new
, andHashMap::new
#8163shadow_reuse
: Now also lints on shadowedif let
bindings, instead ofshadow_unrelated
#8165
False Positive Fixes
or_fun_call
,unnecessary_lazy_evaluations
: Improve heuristics, so that cheap functions (e.g. calling.len()
on aVec
) won't get linted anymore #7639manual_split_once
: No longer suggests code changing the original behavior #7896- Don't show
no_effect
orunnecessary_operation
warning for unit struct implementingFnOnce
#7898 semicolon_if_nothing_returned
: Fixed a bug, where the lint wrongly triggered onlet-else
statements #7955if_then_some_else_none
: No longer lints if there is an early return #7980needless_collect
: No longer suggests removal ofcollect
when removal would create code requiring mutably borrowing a value multiple times #7982shadow_same
: Fix false positive forasync
function's params #7997suboptimal_flops
: No longer triggers in constant functions #8009type_complexity
: No longer lints on associated types in traits #8030question_mark
: No longer lints if returned object is not local #8080option_if_let_else
: No longer lint on complex sub-patterns #8086blocks_in_if_conditions
: No longer lints on empty closures #8100enum_variant_names
: No longer lint when first prefix is only a substring of a camel-case word #8127identity_op
: Only lint on integral operands #8183
Suggestion Fixes/Improvements
search_is_some
: Fix suggestion forany()
not taking item by reference #7463almost_swapped
: Now detects if there is ano_std
orno_core
attribute and adapts the suggestion accordingly #7877redundant_pattern_matching
: Fix suggestion for deref expressions #7949explicit_counter_loop
: Now also produces a suggestion for non-usize
types #7950manual_map
: Fix suggestion when used with unsafe functions and blocks #7968option_map_or_none
: Suggestmap
overand_then
when possible #7971option_if_let_else
: No longer expands macros in the suggestion #7974iter_cloned_collect
: Suggestcopied
overcloned
when possible #8006doc_markdown
: No longer uses inline hints to improve readability of suggestion #8011needless_question_mark
: Now better explains the suggestion #8028single_char_pattern
: Escape backslash\
in suggestion #8067needless_bool
: Suggesta != b
over!(a == b)
#8117iter_skip_next
: Suggest to add amut
if it is necessary in order to apply this lints suggestion #8133neg_multiply
: Now produces a suggestion #8144needless_return
: Now suggests the unit type()
over an empty block{}
in match arms #8185suboptimal_flops
: Now gives a syntactically correct suggestion forto_radians
andto_degrees
#8187
ICE Fixes
Documentation Improvements
print_stdout
,print_stderr
,dbg_macro
: Document how the lint level can be changed crate-wide #8040- Added a note to the
README
that config changes don't apply to already compiled code #8175
Others
- Clippy's lint list now displays the version a lint was added. 🎉 #7813
- New and improved issue templates #8032
- Dev: Add
cargo dev lint
command, to run your modified Clippy version on a file #7917
Rust 1.58
Released 2022-01-13
View all 68 merged pull requests
Rust 1.58.1
- Move
non_send_fields_in_send_ty
tonursery
(now allow-by-default) #8075 useless_format
: Handle implicit named arguments #8295
New lints
transmute_num_to_bytes
#7805match_str_case_mismatch
#7806format_in_format_args
,to_string_in_format_args
#7743uninit_vec
#7682fn_to_numeric_cast_any
#7705undocumented_unsafe_blocks
#7748trailing_empty_array
#7838string_slice
#7878
Moves or deprecations of lints
- Move
non_send_fields_in_send_ty
tosuspicious
#7874 - Move
non_ascii_literal
torestriction
#7907
Changes that expand what code existing lints cover
question_mark
now coversResult
#7840- Make
useless_format
recognize bareformat!("")
#7801 - Lint on underscored variables with no side effects in
no_effect
#7775 - Expand
match_ref_pats
to check for multiple reference patterns #7800
False positive fixes
- Fix false positive of
implicit_saturating_sub
withelse
clause #7832 - Fix
question_mark
when there is call in conditional predicate #7860 mut_mut
no longer lints when type is defined in external macros #7795- Avoid
eq_op
in test functions #7811 cast_possible_truncation
no longer lints when cast is coming fromsignum
method call #7850match_str_case_mismatch
no longer lints on uncased characters #7865ptr_arg
no longer lints references to type aliases #7890missing_safety_doc
now also accepts "implementation safety" headers #7856missing_safety_doc
no longer lints if any parent has#[doc(hidden)]
attribute #7849if_not_else
now ignores else-if statements #7895- Avoid linting
cast_possible_truncation
on bit-reducing operations #7819 - Avoid linting
field_reassign_with_default
whenDrop
andCopy
are involved #7794 unnecessary_sort_by
now checks if argument implementsOrd
trait #7824- Fix false positive in
match_overlapping_arm
#7847 - Prevent
needless_lifetimes
false positive inasync
function definition #7901
Suggestion fixes/improvements
- Keep an initial
::
whendoc_markdown
suggests to use ticks #7916 - Add a machine applicable suggestion for the
doc_markdown
missing backticks lint #7904 equatable_if_let
no longer expands macros in the suggestion #7788- Make
shadow_reuse
suggestion less verbose #7782
ICE fixes
- Fix ICE in
enum_variant_names
#7873 - Fix ICE in
undocumented_unsafe_blocks
#7891
Documentation improvements
- Fixed naive doc formatting for
#[must_use]
lints (must_use_unit
,double_must_use
,must_use_candidate
,let_underscore_must_use
) #7827 - Fix typo in example for
match_result_ok
#7815
Others
- Allow giving reasons for
disallowed_types
#7791 - Fix
manual_assert
andmatch_wild_err_arm
for#![no_std]
and Rust 2021. #7851 - Fix regression in
semicolon_if_nothing_returned
on macros containing while loops #7789 - Added a new configuration
literal-suffix-style
to enforce a certain style writingunseparated_literal_suffix
#7726
Rust 1.57
Released 2021-12-02
View all 148 merged pull requests
New Lints
negative_feature_names
#7539redundant_feature_names
#7539mod_module_files
#7543self_named_module_files
#7543manual_split_once
#7565derivable_impls
#7570needless_option_as_deref
#7596iter_not_returning_iterator
#7610same_name_method
#7653manual_assert
#7669non_send_fields_in_send_ty
#7709equatable_if_let
#7762
Moves and Deprecations
- Move
shadow_unrelated
torestriction
#7338 - Move
option_if_let_else
tonursery
#7568 - Move
branches_sharing_code
tonursery
#7595 - Rename
if_let_some_result
tomatch_result_ok
which now also handleswhile let
cases #7608 - Move
many_single_char_names
topedantic
#7671 - Move
float_cmp
topedantic
#7692 - Rename
box_vec
tobox_collection
and lint on more general cases #7693 - Uplift
invalid_atomic_ordering
to rustc rust-lang/rust#84039
Enhancements
- Rewrite the
shadow*
lints, so that they find a lot more shadows and are not limited to certain patterns #7338 - The
avoid-breaking-exported-api
configuration now also works forbox_collection
,redundant_allocation
,rc_buffer
,vec_box
,option_option
,linkedlist
,rc_mutex
#7560 unnecessary_unwrap
: Now also checks forexpect
s #7584disallowed_methods
: Allow adding a reason that will be displayed with the lint message #7621approx_constant
: Now checks the MSRV forLOG10_2
andLOG2_10
#7629approx_constant
: AddTAU
#7642needless_borrow
: Now also lints on needless mutable borrows #7657missing_safety_doc
: Now also lints on unsafe traits #7734
False Positive Fixes
manual_map
: No longer lints when the option is borrowed in the match and also consumed in the arm #7531filter_next
: No longer lints iffilter
method is not theIterator::filter
method #7562manual_flatten
: No longer lints if expression is used afterif let
#7566option_if_let_else
: Multiple fixes #7573break
andcontinue
statements local to the would-be closure are allowed- Don't lint in const contexts
- Don't lint when yield expressions are used
- Don't lint when the captures made by the would-be closure conflict with the other branch
- Don't lint when a field of a local is used when the type could be potentially moved from
- In some cases, don't lint when scrutinee expression conflicts with the captures of the would-be closure
redundant_allocation
: No longer lints onBox<Box<dyn T>>
which replaces wide pointers with thin pointers #7592bool_assert_comparison
: No longer lints on types that do not implement theNot
trait withOutput = bool
#7605mut_range_bound
: No longer lints on range bound mutations, that are immediately followed by abreak;
#7607mutable_key_type
: Improve accuracy and document remaining false positives and false negatives #7640redundant_closure
: Rewrite the lint to fix various false positives and false negatives #7661large_enum_variant
: No longer wrongly identifies the second largest variant #7677needless_return
: No longer lints on let-else expressions #7685suspicious_else_formatting
: No longer lints in proc-macros #7707excessive_precision
: No longer lints when in some cases the float was already written in the shortest form #7722doc_markdown
: No longer lints on intra-doc links #7772
Suggestion Fixes/Improvements
unnecessary_operation
: Recommend using anassert!
instead of using a function call in an indexing operation #7453manual_split_once
: Produce semantically equivalent suggestion whenrsplitn
is used #7663while_let_on_iterator
: Produce correct suggestion when using&mut
#7690manual_assert
: No better handles complex conditions #7741- Correctly handle signs in exponents in numeric literals lints #7747
suspicious_map
: Now also suggests to useinspect
as an alternative #7770- Drop exponent from suggestion if it is 0 in numeric literals lints #7774
ICE Fixes
Others
Rust 1.56
Released 2021-10-21
View all 38 merged pull requests
New Lints
Enhancements
needless_continue
: Now also lints inloop { continue; }
case #7477disallowed_types
: Now also primitive types can be disallowed #7488manual_swap
: Now also lints on xor swaps #7506map_flatten
: Now also lints on theResult
type #7522no_effect
: Now also lints on inclusive ranges #7556
False Positive Fixes
nonstandard_macro_braces
: No longer lints on similar named nested macros #7478too_many_lines
: No longer lints in closures to avoid duplicated diagnostics #7534similar_names
: No longer complains aboutiter
anditem
being too similar #7546
Suggestion Fixes/Improvements
similar_names
: No longer suggests to insert or add an underscore as a fix #7221new_without_default
: No longer shows the full qualified type path when suggesting adding aDefault
implementation #7493while_let_on_iterator
: Now suggests re-borrowing mutable references #7520extend_with_drain
: Improve code suggestion for mutable and immutable references #7533trivially_copy_pass_by_ref
: Now properly handlesSelf
type #7535never_loop
: Now suggests usingif let
instead of afor
loop when applicable #7541
Documentation Improvements
- Clippy now uses a lint to generate its lint documentation. Lints all the way down. #7502
- Reworked Clippy's website:
#7172
#7279
- Added applicability information about lints
- Added a link to jump into the implementation
- Improved loading times
- Adapted some styling
cargo clippy --help
now also explains the--fix
and--no-deps
flag #7492unnested_or_patterns
: Removedor_patterns
feature gate in the code example #7507
Rust 1.55
Released 2021-09-09
View all 83 merged pull requests
Important Changes
- Stabilized
cargo clippy --fix
🎉 #7405
New Lints
rc_mutex
#7316nonstandard_macro_braces
#7299strlen_on_c_strings
#7243self_named_constructors
#7403disallowed_script_idents
#7400disallowed_types
#7315missing_enforced_import_renames
#7300extend_with_drain
#7270
Moves and Deprecations
- Moved
from_iter_instead_of_collect
topedantic
#7375 - Added
suspicious
as a new lint group for code that is most likely wrong or useless #7350- Moved
blanket_clippy_restriction_lints
tosuspicious
- Moved
empty_loop
tosuspicious
- Moved
eval_order_dependence
tosuspicious
- Moved
float_equality_without_abs
tosuspicious
- Moved
for_loops_over_fallibles
tosuspicious
- Moved
misrefactored_assign_op
tosuspicious
- Moved
mut_range_bound
tosuspicious
- Moved
mutable_key_type
tosuspicious
- Moved
suspicious_arithmetic_impl
tosuspicious
- Moved
suspicious_assignment_formatting
tosuspicious
- Moved
suspicious_else_formatting
tosuspicious
- Moved
suspicious_map
tosuspicious
- Moved
suspicious_op_assign_impl
tosuspicious
- Moved
suspicious_unary_op_formatting
tosuspicious
- Moved
Enhancements
while_let_on_iterator
: Now suggests&mut iter
inside closures #7262doc_markdown
:wildcard_enum_match_arm
,match_wildcard_for_single_variants
: Now allows wildcards for enums with unstable or hidden variants #7407redundant_allocation
: Now additionally supports theArc<>
type #7308disallowed_names
: Now allows disallowed names in test code #7379redundant_closure
: Suggests&mut
forFnMut
#7437disallowed_methods
,disallowed_types
: The configuration valuesdisallowed-method
anddisallowed-type
no longer require fully qualified paths #7345zst_offset
: Fixed lint invocation after it was accidentally suppressed #7396
False Positive Fixes
default_numeric_fallback
: No longer lints on float literals as function arguments #7446use_self
: No longer lints on type parameters #7288unimplemented
: Now ignores theassert
anddebug_assert
macros #7439branches_sharing_code
: Now always checks for block expressions #7462field_reassign_with_default
: No longer triggers in macros #7160redundant_clone
: No longer lints on required clones for borrowed data #7346default_numeric_fallback
: No longer triggers in external macros #7325needless_bool
: No longer lints in macros #7442useless_format
: No longer triggers when additional text is being appended #7442assertions_on_constants
:cfg!(...)
is no longer considered to be a constant #7319
Suggestion Fixes/Improvements
needless_collect
: Now show correct lint messages for shadowed values #7289wrong_pub_self_convention
: The deprecated message now suggest the correct configuration value #7382semicolon_if_nothing_returned
: Allow missing semicolon in blocks with only one expression #7326
ICE Fixes
Rust 1.54
Released 2021-07-29
View all 74 merged pull requests
New Lints
ref_binding_to_reference
#7105needless_bitwise_bool
#7133unused_async
#7225manual_str_repeat
#7265suspicious_splitn
#7292
Moves and Deprecations
- Deprecate
pub_enum_variant_names
andwrong_pub_self_convention
in favor of the newavoid-breaking-exported-api
config option (see Enhancements) #7187 - Move
inconsistent_struct_constructor
topedantic
#7193 - Move
needless_borrow
tostyle
(now warn-by-default) #7254 - Move
suspicious_operation_groupings
tonursery
#7266 - Move
semicolon_if_nothing_returned
topedantic
#7268
Enhancements
while_let_on_iterator
: Now also lints in nested loops #6966single_char_pattern
: Now also lints onstrip_prefix
andstrip_suffix
#7156needless_collect
: Now also lints on assignments with type annotations #7163if_then_some_else_none
: Now works with the MSRV config #7177- Add
avoid-breaking-exported-api
config option for the lintsenum_variant_names
,large_types_passed_by_value
,trivially_copy_pass_by_ref
,unnecessary_wraps
,upper_case_acronyms
, andwrong_self_convention
. We recommend to set this configuration option tofalse
before a major release (1.0/2.0/...) to clean up the API #7187 needless_collect
: Now lints on even more data structures #7188missing_docs_in_private_items
: No longer sees#[<name> = "<value>"]
like attributes as sufficient documentation #7281needless_collect
,short_circuit_statement
,unnecessary_operation
: Now work as expected when used withallow
#7282
False Positive Fixes
implicit_return
: Now takes all diverging functions in account to avoid false positives #6951while_let_on_iterator
: No longer lints when the iterator is a struct field and the struct is used in the loop #6966multiple_inherent_impl
: No longer lints with generic arguments #7089comparison_chain
: No longer lints in aconst
context #7118while_immutable_condition
: Fix false positive where mutation in the loop variable wasn't picked up #7144default_trait_access
: No longer lints in macros #7150needless_question_mark
: No longer lints when the inner value is implicitly dereferenced #7165unused_unit
: No longer lints when multiple macro contexts are involved #7167eval_order_dependence
: Fix false positive in async context #7174unnecessary_filter_map
: No longer lints if thefilter_map
changes the type #7175wrong_self_convention
: No longer lints in trait implementations of non-Copy
types #7182suboptimal_flops
: No longer lints onpowi(2)
#7201wrong_self_convention
: No longer lints if there is no implicitself
#7215option_if_let_else
: No longer lints onelse if let
pattern #7216use_self
,useless_conversion
: Fix false positives when generic arguments are involved #7223manual_unwrap_or
: Fix false positive with deref coercion #7233similar_names
: No longer lints onwparam
/lparam
#7255redundant_closure
: No longer lints on using thevec![]
macro in a closure #7263
Suggestion Fixes/Improvements
implicit_return
#6951- Fix suggestion for async functions
- Improve suggestion with macros
- Suggest to change
break
toreturn
when appropriate
while_let_on_iterator
: Now suggests&mut iter
when necessary #6966match_single_binding
: Improve suggestion when match scrutinee has side effects #7095needless_borrow
: Now suggests to also change usage sites as needed #7105write_with_newline
: Improve suggestion when only\n
is written to the buffer #7183from_iter_instead_of_collect
: The suggestion is now auto applicable also when a<_ as Trait>::_
is involved #7264not_unsafe_ptr_arg_deref
: Improved error message #7294
ICE Fixes
- Fix ICE when running Clippy on
libstd
#7140 implicit_return
#7242
Rust 1.53
Released 2021-06-17
View all 126 merged pull requests
New Lints
option_filter_map
#6342branches_sharing_code
#6463needless_for_each
#6706if_then_some_else_none
#6859non_octal_unix_permissions
#7001unnecessary_self_imports
#7072bool_assert_comparison
#7083cloned_instead_of_copied
#7098flat_map_option
#7101
Moves and Deprecations
- Deprecate
filter_map
lint #7059 - Move
transmute_ptr_to_ptr
topedantic
#7102
Enhancements
mem_replace_with_default
: Also lint on common std constructors #6820wrong_self_convention
: Also lint onto_*_mut
methods #6828wildcard_enum_match_arm
,match_wildcard_for_single_variants
: #6863- Attempt to find a common path prefix in suggestion
- Don't lint on
Option
andResult
- Consider
Self
prefix
explicit_deref_methods
: Also lint on chainedderef
calls #6865or_fun_call
: Also lint onunsafe
blocks #6928vec_box
,linkedlist
,option_option
: Also lint inconst
andstatic
items #6938search_is_some
: Also check foris_none
#6942string_lit_as_bytes
: Also lint oninto_bytes
#6959len_without_is_empty
: Also lint if function signatures oflen
andis_empty
don't match #6980redundant_pattern_matching
: Also lint if the pattern is a&
pattern #6991clone_on_copy
: Also lint on chained method calls takingself
by value #7000missing_panics_doc
: Also lint onassert_eq!
andassert_ne!
#7029needless_return
: Also lint inasync
functions #7067unused_io_amount
: Also lint on expressions like_.read().ok()?
#7100iter_cloned_collect
: Also lint on large arrays, since const-generics are now stable #7138
False Positive Fixes
upper_case_acronyms
: No longer lints on public items #6805suspicious_map
: No longer lints when side effects may occur inside themap
call #6831manual_map
,manual_unwrap_or
: No longer lints inconst
functions #6917wrong_self_convention
: Now respectsCopy
types #6924needless_question_mark
: No longer lints if the?
and theSome(..)
come from different macro contexts #6935map_entry
: Better detect if the entry API can be used #6937or_fun_call
: No longer lints on somelen
function calls #6950new_ret_no_self
: No longer lints whenSelf
is returned with different generic arguments #6952upper_case_acronyms
: No longer lints on public items #6981explicit_into_iter_loop
: Only lint wheninto_iter
is an implementation ofIntoIterator
#6982expl_impl_clone_on_copy
: Take generic constraints into account before suggesting to usederive
instead #6993missing_panics_doc
: No longer lints when only debug-assertions are used #6996clone_on_copy
: Only lint when using theClone
trait #7000wrong_self_convention
: No longer lints inside a trait implementation #7002redundant_clone
: No longer lints when the cloned value is modified while the clone is in use #7011same_item_push
: No longer lints if theVec
is used in the loop body #7018cargo_common_metadata
: Remove author requirement #7026panic_in_result_fn
: No longer lints ondebug_assert
family #7060panic
: No longer wrongfully lints ondebug_assert
with message #7063wrong_self_convention
: No longer lints in trait implementations where noself
is involved #7064missing_const_for_fn
: No longer lints when unstableconst
function is involved #7076suspicious_else_formatting
: Allow Allman style braces #7087inconsistent_struct_constructor
: No longer lints in macros #7097single_component_path_imports
: No longer lints on macro re-exports #7120
Suggestion Fixes/Improvements
redundant_pattern_matching
: Add a note when applying this lint would change the drop order #6568write_literal
,print_literal
: Add auto-applicable suggestion #6821manual_map
: Fix suggestion for complexif let ... else
chains #6856inconsistent_struct_constructor
: Make lint description and message clearer #6892map_entry
: Now suggestsor_insert
,insert_with
ormatch _.entry(_)
as appropriate #6937manual_flatten
: Suggest to insertcopied
if necessary #6962redundant_slicing
: Fix suggestion when a re-borrow might be required or when the value is from a macro call #6975match_wildcard_for_single_variants
: Fix suggestion for hidden variant #6988clone_on_copy
: Correct suggestion when the cloned value is a macro call #7000manual_map
: Fix suggestion at the end of an if chain #7004- Fix needless parenthesis output in multiple lint suggestions #7013
needless_collect
: Better explanation in the lint message #7020useless_vec
: Now considers mutability #7036useless_format
: Wrap the content in braces if necessary #7092single_match
: Don't suggest an equality check for types which don't implementPartialEq
#7093from_over_into
: Mention type in help message #7099manual_unwrap_or
: Fix invalid code suggestion due to a macro call #7136
ICE Fixes
macro_use_imports
#7022missing_panics_doc
#7034tabs_in_doc_comments
#7039missing_const_for_fn
#7128
Others
- Clippy's lint list now supports themes #7030
- Lints that were uplifted to
rustc
now mention the newrustc
name in the deprecation warning #7056
Rust 1.52
Released 2021-05-06
View all 102 merged pull requests
New Lints
from_str_radix_10
#6717implicit_clone
#6730semicolon_if_nothing_returned
#6681manual_flatten
#6646inconsistent_struct_constructor
#6769iter_count
#6791default_numeric_fallback
#6662bytes_nth
#6695filter_map_identity
#6685manual_map
#6573
Moves and Deprecations
- Moved
upper_case_acronyms
topedantic
#6775 - Moved
manual_map
tonursery
#6796 - Moved
unnecessary_wraps
topedantic
#6765 - Moved
trivial_regex
tonursery
#6696 - Moved
naive_bytecount
topedantic
#6825 - Moved
upper_case_acronyms
tostyle
#6788 - Moved
manual_map
tostyle
#6801
Enhancements
disallowed_methods
: Now supports functions in addition to methods #6674upper_case_acronyms
: Added a new configurationupper-case-acronyms-aggressive
to trigger the lint if there is more than one uppercase character next to each other #6788collapsible_match
: Now supports block comparison with different value names #6754unnecessary_wraps
: Will now suggest removing unnecessary wrapped return unit type, likeOption<()>
#6665- Improved value usage detection in closures #6698
False Positive Fixes
use_self
: No longer lints in macros #6833use_self
: Fixed multiple false positives for: generics, associated types and derive implementations #6179missing_inline_in_public_items
: No longer lints for procedural macros #6814inherent_to_string
: No longer lints on functions with function generics #6771doc_markdown
: AddOpenDNS
to the default configuration as an allowed identifier #6783missing_panics_doc
: No longer lints onunreachable!
#6700collapsible_if
: No longer lints on if statements with attributes #6701match_same_arms
: Only considers empty blocks as equal if the tokens contained are the same #6843redundant_closure
: Now ignores macros #6871manual_map
: Fixed false positives when control flow statements likereturn
,break
etc. are used #6801vec_init_then_push
: Fixed false positives for loops and if statements #6697len_without_is_empty
: Will now consider multiple impl blocks and#[allow]
on thelen
method as well as the type definition. #6853let_underscore_drop
: Only lints on types which implementDrop
#6682unit_arg
: No longer lints on unit arguments when they come from a path expression. #6601cargo_common_metadata
: No longer lints ifpublish = false
is defined in the manifest #6650
Suggestion Fixes/Improvements
collapsible_match
: Fixed lint message capitalization #6766or_fun_call
: Improved suggestions foror_insert(vec![])
#6790manual_map
: No longer expands macros in the suggestions #6801- Aligned Clippy's lint messages with the rustc dev guide #6787
ICE Fixes
Documentation Improvements
useless_format
: Improved the documentation example #6854- Clippy's
README.md
: Includes a new subsection on running Clippy as a rustc wrapper #6782
Others
- Running
cargo clippy
aftercargo check
now works as expected (cargo clippy
andcargo check
no longer shares the same build cache) #6687 - Cargo now re-runs Clippy if arguments after
--
provided tocargo clippy
are changed. #6834 - Extracted Clippy's
utils
module into the newclippy_utils
crate #6756 - Clippy lintcheck tool improvements #6800 #6735 #6764 #6708 #6780 #6686
Rust 1.51
Released 2021-03-25
View all 78 merged pull requests
New Lints
upper_case_acronyms
#6475from_over_into
#6476case_sensitive_file_extension_comparisons
#6500needless_question_mark
#6507missing_panics_doc
#6523redundant_slicing
#6528vec_init_then_push
#6538ptr_as_ptr
#6542collapsible_else_if
(split out fromcollapsible_if
) #6544inspect_for_each
#6577manual_filter_map
#6591exhaustive_enums
#6617exhaustive_structs
#6617
Moves and Deprecations
- Replace
find_map
withmanual_find_map
#6591 unknown_clippy_lints
Now integrated in theunknown_lints
rustc lint #6653
Enhancements
ptr_arg
Now also suggests to use&Path
instead of&PathBuf
#6506cast_ptr_alignment
Also lint when thepointer::cast
method is used #6557collapsible_match
Now also deals with&
and*
operators in thematch
scrutinee #6619
False Positive Fixes
similar_names
Ignore underscore prefixed names #6403print_literal
andwrite_literal
No longer lint numeric literals #6408large_enum_variant
No longer lints in external macros #6485empty_enum
Only lint ifnever_type
feature is enabled #6513field_reassign_with_default
No longer lints in macros #6553size_of_in_element_count
No longer lints when dividing by element size #6578needless_return
No longer lints in macros #6586match_overlapping_arm
No longer lint when first arm is completely included in second arm #6603doc_markdown
AddWebGL
to the default configuration as an allowed identifier #6605
Suggestion Fixes/Improvements
field_reassign_with_default
Don't expand macro in lint suggestion #6531match_like_matches_macro
Strip references in suggestion #6532single_match
Suggestif
overif let
when possible #6574ref_in_deref
Use parentheses correctly in suggestion #6609stable_sort_primitive
Clarify error message #6611
ICE Fixes
Documentation Improvements
- Improve search performance on the Clippy website and make it possible to directly search for lints on the GitHub issue tracker #6483
- Clean up
README.md
by removing outdated paragraph #6488 await_holding_refcell_ref
andawait_holding_lock
#6585as_conversions
#6608
Others
- Clippy now has a Roadmap for 2021. If you like to get involved in a bigger project, take a look at the Roadmap project page. All issues listed there are actively mentored #6462
- The Clippy version number now corresponds to the Rust version number #6526
- Fix oversight which caused Clippy to lint deps in some environments, where
CLIPPY_TESTS=true
was set somewhere #6575 - Add
cargo dev-lintcheck
tool to the Clippy Dev Tool #6469
Rust 1.50
Released 2021-02-11
View all 119 merged pull requests
New Lints
suspicious_operation_groupings
#6086size_of_in_element_count
#6394unnecessary_wraps
#6070let_underscore_drop
#6305collapsible_match
#6402redundant_else
#6330zero_sized_map_values
#6218print_stderr
#6367string_from_utf8_as_bytes
#6134
Moves and Deprecations
- Previously deprecated
str_to_string
andstring_to_string
have been un-deprecated asrestriction
lints #6333 - Deprecate
panic_params
lint. This is now available in rustc asnon_fmt_panics
#6351 - Move
map_err_ignore
torestriction
#6416 - Move
await_holding_refcell_ref
topedantic
#6354 - Move
await_holding_lock
topedantic
#6354
Enhancements
- Add the
unreadable-literal-lint-fractions
configuration to disable theunreadable_literal
lint for fractions #6421 clone_on_copy
: Now shows the type in the lint message #6443redundant_pattern_matching
: Now also lints onstd::task::Poll
#6339redundant_pattern_matching
: Additionally also lints onstd::net::IpAddr
#6377search_is_some
: Now suggestscontains
instead offind(foo).is_some()
#6119clone_double_ref
: Now prints the reference type in the lint message #6442modulo_one
: Now also lints on -1. #6360empty_loop
: Now lints no_std crates, too #6205or_fun_call
: Now also lints when indexingHashMap
orBTreeMap
#6267wrong_self_convention
: Now also lints in trait definitions #6316needless_borrow
: Print the type in the lint message #6449
False Positive Fixes
manual_range_contains
: No longer lints inconst fn
#6382unnecessary_lazy_evaluations
: No longer lints if closure argument is used #6370match_single_binding
: Now ignores cases with#[cfg()]
macros #6435match_like_matches_macro
: No longer lints on arms with attributes #6290map_clone
: No longer lints with deref and clone #6269map_clone
: No longer lints in the case of &mut #6301needless_update
: Now ignoresnon_exhaustive
structs #6464needless_collect
: No longer lints when a collect is needed multiple times #6313unnecessary_cast
No longer lints cfg-dependent types #6369declare_interior_mutable_const
andborrow_interior_mutable_const
: Both now ignore enums with frozen variants #6110field_reassign_with_default
No longer lint for private fields #6537
Suggestion Fixes/Improvements
vec_box
: Provide correct type scope suggestion #6271manual_range_contains
: Give correct suggestion when using floats #6320unnecessary_lazy_evaluations
: Don't always mark suggestion as MachineApplicable #6272manual_async_fn
: Improve suggestion formatting #6294unnecessary_cast
: Fix incorrectly formatted float literal suggestion #6362
ICE Fixes
- Fix a crash in
from_iter_instead_of_collect
#6304 - Fix a silent crash when parsing doc comments in
needless_doctest_main
#6458
Documentation Improvements
- The lint website search has been improved (#6477):
- Searching for lints with dashes and spaces is possible now. For example
missing-errors-doc
andmissing errors doc
are now valid aliases for lint names - Improved fuzzy search in lint descriptions
- Searching for lints with dashes and spaces is possible now. For example
- Various README improvements #6287
- Add known problems to
comparison_chain
documentation #6390 - Fix example used in
cargo_common_metadata
#6293 - Improve
map_clone
documentation #6340
Others
- You can now tell Clippy about the MSRV your project supports. Please refer to the specific README section to learn more about MSRV support here #6201
- Add
--no-deps
option to avoid running on path dependencies in workspaces #6188
Rust 1.49
Released 2020-12-31
View all 107 merged pull requests
New Lints
field_reassign_with_default
#5911await_holding_refcell_ref
#6029disallowed_methods
#6081inline_asm_x86_att_syntax
#6092inline_asm_x86_intel_syntax
#6092from_iter_instead_of_collect
#6101mut_mutex_lock
#6103single_element_loop
#6109manual_unwrap_or
#6123large_types_passed_by_value
#6135result_unit_err
#6157ref_option_ref
#6165manual_range_contains
#6177unusual_byte_groupings
#6183comparison_to_empty
#6226map_collect_result_unit
#6227manual_ok_or
#6233
Moves and Deprecations
- Rename
single_char_push_str
tosingle_char_add_str
#6037 - Rename
zero_width_space
toinvisible_characters
#6105 - Deprecate
drop_bounds
(uplifted) #6111 - Move
string_lit_as_bytes
tonursery
#6117 - Move
rc_buffer
torestriction
#6128
Enhancements
manual_memcpy
: Also lint when there are loop counters (and produce a reliable suggestion) #5727single_char_add_str
: Also lint onString::insert_str
#6037invisible_characters
: Also lint the characters\u{AD}
and\u{2060}
#6105eq_op
: Also lint on theassert_*!
macro family #6167items_after_statements
: Also lint in local macro expansions #6176unnecessary_cast
: Also lint casts on integer and float literals #6187manual_unwrap_or
: Also lintResult::unwrap_or
#6190match_like_matches_macro
: Also lint whenmatch
has more than two arms #6216integer_arithmetic
: Better handle/
an%
operators #6229
False Positive Fixes
needless_lifetimes
: Bail out if the function has awhere
clause with the lifetime #5978explicit_counter_loop
: No longer lints, when loop counter is used after it is incremented #6076or_fun_call
: Revert changes addressing the handling ofconst fn
#6077needless_range_loop
: No longer lints, when the iterable is used in the range #6102inconsistent_digit_grouping
: Fix bug when using floating point exponent #6104mistyped_literal_suffixes
: No longer lints on the fractional part of a float (e.g.713.32_64
) #6114invalid_regex
: No longer lint on unicode characters withinbytes::Regex
#6132boxed_local
: No longer lints onextern fn
arguments #6133needless_lifetimes
: Fix regression, where lifetime is used inwhere
clause #6198
Suggestion Fixes/Improvements
unnecessary_sort_by
: Avoid dereferencing the suggested closure parameter #6078needless_arbitrary_self_type
: Correctly handle expanded code #6093useless_format
: Preserve raw strings in suggestion #6151empty_loop
: Suggest alternatives #6162borrowed_box
: Correctly add parentheses in suggestion #6200unused_unit
: Improve suggestion formatting #6247
Documentation Improvements
- Some doc improvements:
doc_markdown
: Document problematic link text style #6107
Rust 1.48
Released 2020-11-19
View all 99 merged pull requests
New lints
self_assignment
#5894unnecessary_lazy_evaluations
#5720manual_strip
#6038map_err_ignore
#5998rc_buffer
#6044to_string_in_display
#5831single_char_push_str
#5881
Moves and Deprecations
- Downgrade
verbose_bit_mask
to pedantic #6036
Enhancements
- Extend
precedence
to handle chains of methods combined with unary negation #5928 useless_vec
: add a configuration value for the maximum allowed size on the stack #5907suspicious_arithmetic_impl
: extend to implementations ofBitAnd
,BitOr
,BitXor
,Rem
,Shl
, andShr
#5884invalid_atomic_ordering
: detect misuse ofcompare_exchange
,compare_exchange_weak
, andfetch_update
#6025- Avoid
redundant_pattern_matching
triggering in macros #6069 option_if_let_else
: distinguish pure from impureelse
expressions #5937needless_doctest_main
: parse doctests instead of using textual search #5912wildcard_imports
: allowprelude
to appear in any segment of an import #5929- Re-enable
len_zero
for ranges now thatrange_is_empty
is stable #5961 option_as_ref_deref
: catch fully-qualified calls toDeref::deref
andDerefMut::deref_mut
#5933
False Positive Fixes
useless_attribute
: permit allowingwildcard_imports
andenum_glob_use
#5994transmute_ptr_to_ptr
: avoid suggesting dereferencing raw pointers in const contexts #5999redundant_closure_call
: take into account usages of the closure in nested functions and closures #5920- Fix false positive in
borrow_interior_mutable_const
when referencing a field behind a pointer #5949 doc_markdown
: allow using "GraphQL" without backticks #5996to_string_in_display
: avoid linting when callingto_string()
on anything that is notself
#5971indexing_slicing
andout_of_bounds_indexing
treat references to arrays as arrays #6034should_implement_trait
: ignore methods with lifetime parameters #5725needless_return
: avoid linting if a temporary borrows a local variable #5903- Restrict
unnecessary_sort_by
to non-reference, Copy types #6006 - Avoid suggesting
from_bits
/to_bits
in const contexts intransmute_int_to_float
#5919 declare_interior_mutable_const
andborrow_interior_mutable_const
: improve detection of interior mutable types #6046
Suggestion Fixes/Improvements
let_and_return
: add a cast to the suggestion when the return expression has adjustments #5946useless_conversion
: show the type in the error message #6035unnecessary_mut_passed
: discriminate between functions and methods in the error message #5892float_cmp
andfloat_cmp_const
: change wording to make margin of error less ambiguous #6043default_trait_access
: do not use unnecessary type parameters in the suggestion #5993collapsible_if
: don't use expanded code in the suggestion #5992- Do not suggest empty format strings in
print_with_newline
andwrite_with_newline
#6042 unit_arg
: improve the readability of the suggestion #5931stable_sort_primitive
: print the type that is being sorted in the lint message #5935- Show line count and max lines in
too_many_lines
lint message #6009 - Keep parentheses in the suggestion of
useless_conversion
where applicable #5900 option_map_unit_fn
andresult_map_unit_fn
: print the unit type()
explicitly #6024redundant_allocation
: suggest replacingRc<Box<T>>
withRc<T>
#5899- Make lint messages adhere to rustc dev guide conventions #5893
ICE Fixes
- Fix ICE in
repeat_once
#5948
Documentation Improvements
mutable_key_type
: explain potential for false positives when the interior mutable type is not accessed in theHash
implementation #6019unnecessary_mut_passed
: fix typo #5913- Add example of false positive to
ptr_arg
docs. #5885 box_vec
,vec_box
andborrowed_box
: add link to the documentation ofBox
#6023
Rust 1.47
Released 2020-10-08
View all 76 merged pull requests
New lints
derive_ord_xor_partial_ord
#5848trait_duplication_in_bounds
#5852map_identity
#5694unit_return_expecting_ord
#5737pattern_type_mismatch
#4841repeat_once
#5773same_item_push
#5825needless_arbitrary_self_type
#5869match_like_matches_macro
#5769stable_sort_primitive
#5809blanket_clippy_restriction_lints
#5750option_if_let_else
#5301
Moves and Deprecations
- Deprecate
regex_macro
lint #5760 - Move
range_minus_one
topedantic
#5752
Enhancements
- Improve
needless_collect
by catchingcollect
calls followed byiter
orinto_iter
calls #5837 panic
,todo
,unimplemented
andunreachable
now detect calls with formatting #5811- Detect more cases of
suboptimal_flops
andimprecise_flops
#5443 - Handle asymmetrical implementations of
PartialEq
incmp_owned
#5701 - Make it possible to allow
unsafe_derive_deserialize
#5870 - Catch
ord.min(a).max(b)
where a < b inmin_max
#5871 - Make
clone_on_copy
suggestion machine applicable #5745 - Enable
len_zero
on ranges now thatis_empty
is stable on them #5961
False Positive Fixes
- Avoid triggering
or_fun_call
with const fns that take no arguments #5889 - Fix
redundant_closure_call
false positive for closures that have multiple calls #5800 - Don't lint cases involving
ManuallyDrop
inredundant_clone
#5824 - Treat a single expression the same as a single statement in the 2nd arm of a match in
single_match_else
#5771 - Don't trigger
unnested_or_patterns
if the featureor_patterns
is not enabled #5758 - Avoid linting if key borrows in
unnecessary_sort_by
#5756 - Consider
Try
impl forPoll
when generating suggestions intry_err
#5857 - Take input lifetimes into account in
manual_async_fn
#5859 - Fix multiple false positives in
type_repetition_in_bounds
and add a configuration option #5761 - Limit the
suspicious_arithmetic_impl
lint to one binary operation #5820
Suggestion Fixes/Improvements
- Improve readability of
shadow_unrelated
suggestion by truncating the RHS snippet #5788 - Suggest
filter_map
instead offlat_map
when mapping toOption
inmap_flatten
#5846 - Ensure suggestion is shown correctly for long method call chains in
iter_nth_zero
#5793 - Drop borrow operator in suggestions of
redundant_pattern_matching
#5815 - Add suggestion for
iter_skip_next
#5843 - Improve
collapsible_if
fix suggestion #5732
ICE Fixes
- Fix ICE caused by
needless_collect
#5877 - Fix ICE caused by
unnested_or_patterns
#5784
Documentation Improvements
- Fix grammar of
await_holding_lock
documentation #5748
Others
- Make lints adhere to the rustc dev guide #5888
Rust 1.46
Released 2020-08-27
View all 48 merged pull requests
New lints
Moves and Deprecations
- Move
cast_ptr_alignment
to pedantic #5667
Enhancements
- Improve
mem_replace_with_uninit
lint #5695
False Positive Fixes
len_zero
: Avoid linting ranges when therange_is_empty
feature is not enabled #5656let_and_return
: Don't lint if a temporary borrow is involved #5680reversed_empty_ranges
: Avoid lintingN..N
in for loop arguments in #5692if_same_then_else
: Don't assume multiplication is always commutative #5702disallowed_names
: Removebar
from the default configuration #5712redundant_pattern_matching
: Avoid suggesting non-const fn
calls in const contexts #5724
Suggestion Fixes/Improvements
- Fix suggestion of
unit_arg
lint, so that it suggest semantic equivalent code #4455 - Add auto applicable suggestion to
macro_use_imports
#5279
ICE Fixes
- Fix ICE in the
consts
module of Clippy #5709
Documentation Improvements
- Improve code examples across multiple lints #5664
Others
- Introduce a
--rustc
flag toclippy-driver
, which turnsclippy-driver
intorustc
and passes all the given arguments torustc
. This is especially useful for tools that need therustc
version Clippy was compiled with, instead of the Clippy version. E.g.clippy-driver --rustc --version
will print the output ofrustc --version
. #5178 - New issue templates now make it easier to complain if Clippy is too annoying or not annoying enough! #5735
Rust 1.45
Released 2020-07-16
View all 81 merged pull requests
New lints
match_wildcard_for_single_variants
#5582unsafe_derive_deserialize
#5493if_let_mutex
#5332mismatched_target_os
#5506await_holding_lock
#5439match_on_vec_items
#5522manual_async_fn
#5576reversed_empty_ranges
#5583manual_non_exhaustive
#5550
Moves and Deprecations
- Downgrade
match_bool
to pedantic #5408 - Downgrade
match_wild_err_arm
to pedantic and update help messages. #5622 - Downgrade
useless_let_if_seq
to nursery. #5599 - Generalize
option_and_then_some
and rename tobind_instead_of_map
. #5529 - Rename
identity_conversion
touseless_conversion
. #5568 - Merge
block_in_if_condition_expr
andblock_in_if_condition_stmt
intoblocks_in_if_conditions
. #5563 - Merge
option_map_unwrap_or
,option_map_unwrap_or_else
andresult_map_unwrap_or_else
intomap_unwrap_or
. #5563 - Merge
option_unwrap_used
andresult_unwrap_used
intounwrap_used
. #5563 - Merge
option_expect_used
andresult_expect_used
intoexpect_used
. #5563 - Merge
for_loop_over_option
andfor_loop_over_result
intofor_loops_over_fallibles
. #5563
Enhancements
- Avoid running cargo lints when not enabled to improve performance. #5505
- Extend
useless_conversion
withTryFrom
andTryInto
. #5631 - Lint also in type parameters and where clauses in
unused_unit
. #5592 - Do not suggest deriving
Default
innew_without_default
. #5616
False Positive Fixes
while_let_on_iterator
#5525empty_line_after_outer_attr
#5609unnecessary_unwrap
#5558comparison_chain
#5596- Don't trigger
used_underscore_binding
in await desugaring. #5535 - Don't trigger
borrowed_box
on mutable references. #5491 - Allow
1 << 0
inidentity_op
. #5602 - Allow
use super::*;
glob imports inwildcard_imports
. #5564 - Whitelist more words in
doc_markdown
. #5611 - Skip dev and build deps in
multiple_crate_versions
. #5636 - Honor
allow
attribute on arguments inptr_arg
. #5647 - Honor lint level attributes for
redundant_field_names
,just_underscores_and_digits
,many_single_char_names
andsimilar_names
. #5651 - Ignore calls to
len
inor_fun_call
. #4429
Suggestion Improvements
- Simplify suggestions in
manual_memcpy
. #5536 - Fix suggestion in
redundant_pattern_matching
for macros. #5511 - Avoid suggesting
copied()
for mutable references inmap_clone
. #5530 - Improve help message for
clone_double_ref
. #5547
ICE Fixes
- Fix ICE caused in unwrap module. #5590
- Fix ICE on rustc test issue-69020-assoc-const-arith-overflow.rs #5499
Documentation
- Clarify the documentation of
unnecessary_mut_passed
. #5639 - Extend example for
unneeded_field_pattern
. #5541
Rust 1.44
Released 2020-06-04
View all 124 merged pull requests
New lints
explicit_deref_methods
#5226implicit_saturating_sub
#5427macro_use_imports
#5230verbose_file_reads
#5272future_not_send
#5423redundant_pub_crate
#5319large_const_arrays
#5248result_map_or_into_option
#5415redundant_allocation
#5349fn_address_comparisons
#5294vtable_address_comparisons
#5294
Moves and Deprecations
- Deprecate
replace_consts
lint #5380 - Move
cognitive_complexity
to nursery #5428 - Move
useless_transmute
to nursery #5364 - Downgrade
inefficient_to_string
to pedantic #5412 - Downgrade
option_option
to pedantic #5401 - Downgrade
unreadable_literal
to pedantic #5419 - Downgrade
let_unit_value
to pedantic #5409 - Downgrade
trivially_copy_pass_by_ref
to pedantic #5410 - Downgrade
implicit_hasher
to pedantic #5411
Enhancements
- On nightly you can now use
cargo clippy --fix -Z unstable-options
to auto-fix lints that support this #5363 - Make
redundant_clone
also trigger on cases where the cloned value is not consumed. #5304 - Expand
integer_arithmetic
to also disallow bit-shifting #5430 option_as_ref_deref
now detects more deref cases #5425large_enum_variant
now report the sizes of the largest and second-largest variants #5466bool_comparison
now also checks for inequality comparisons that can be written more concisely #5365- Expand
clone_on_copy
to work in method call arguments as well #5441 redundant_pattern_matching
now also handleswhile let
#5483integer_arithmetic
now also lints references of integers #5329- Expand
float_cmp_const
to also work on arrays #5345 - Trigger
map_flatten
when map is called on anOption
#5473
False Positive Fixes
many_single_char_names
#5468should_implement_trait
#5437unused_self
#5387redundant_clone
#5453precedence
#5445suspicious_op_assign_impl
#5424needless_lifetimes
#5293redundant_pattern
#5287inconsistent_digit_grouping
#5451
Suggestion Improvements
- Improved
question_mark
lint suggestion so that it doesn't add redundantas_ref()
#5481 - Improve the suggested placeholder in
option_map_unit_fn
#5292 - Improve suggestion for
match_single_binding
when triggered inside a closure #5350
ICE Fixes
Documentation
- Fix documentation generation for configurable lints #5353
- Update documentation for
new_ret_no_self
#5448 - The documentation for
option_option
now suggest using a tri-state enum #5403 - Fix bit mask example in
verbose_bit_mask
documentation #5454 wildcard_imports
documentation now mentions thatuse ...::prelude::*
is not linted #5312
Rust 1.43
Released 2020-04-23
View all 91 merged pull requests
New lints
imprecise_flops
#4897suboptimal_flops
#4897wildcard_imports
#5029single_component_path_imports
#5058match_single_binding
#5061let_underscore_lock
#5101struct_excessive_bools
#5125fn_params_excessive_bools
#5125option_env_unwrap
#5148lossy_float_literal
#5202rest_pat_in_fully_bound_structs
#5258
Moves and Deprecations
- Move
unneeded_field_pattern
to pedantic group #5200
Enhancements
- Make
missing_errors_doc
lint also trigger onasync
functions #5181 - Add more constants to
approx_constant
#5193 - Extend
question_mark
lint #5266
False Positive Fixes
Suggestion Improvements
- Improve suggestion when blocks of code are suggested #5134
ICE Fixes
misc_early
lints #5129missing_errors_doc
#5213- Fix ICE when evaluating
usize
s #5256
Documentation
- Improve documentation of
iter_nth_zero
- Add documentation pages for stable releases #5171
Others
- Clippy now completely runs on GitHub Actions #5190
Rust 1.42
Released 2020-03-12
View all 101 merged pull requests
New lints
filetype_is_file
#4543let_underscore_must_use
#4823modulo_arithmetic
#4867mem_replace_with_default
#4881mutable_key_type
#4885option_as_ref_deref
#4945wildcard_in_or_patterns
#4960iter_nth_zero
#4966invalid_atomic_ordering
#4999skip_while_next
#5067
Moves and Deprecations
- Move
transmute_float_to_int
from nursery to complexity group #5015 - Move
range_plus_one
to pedantic group #5057 - Move
debug_assert_with_mut_call
to nursery group #5106 - Deprecate
unused_label
#4930
Enhancements
- Lint vectored IO in
unused_io_amount
#5027 - Make
vec_box
configurable by adding a size threshold #5081 - Also lint constants in
cmp_nan
#4910 - Fix false negative in
expect_fun_call
#4915 - Fix false negative in
redundant_clone
#5017
False Positive Fixes
map_clone
#4937replace_consts
#4977let_and_return
#5008eq_op
#5079possible_missing_comma
#5083debug_assert_with_mut_call
#5106- Don't trigger
let_underscore_must_use
in external macros #5082 - Don't trigger
empty_loop
inno_std
crates #5086
Suggestion Improvements
option_map_unwrap_or
#4634wildcard_enum_match_arm
#4934cognitive_complexity
#4935decimal_literal_representation
#4956unknown_clippy_lints
#4963explicit_into_iter_loop
#4978useless_attribute
#5022if_let_some_result
#5032
ICE fixes
Documentation
- Improve documentation of
empty_enum
,replace_consts
,redundant_clone
, anditerator_step_by_zero
Rust 1.41
Released 2020-01-30
View all 74 merged pull requests
- New Lints:
- Remove plugin interface, see Inside Rust Blog for details #4714
- Move
use_self
to nursery group #4863 - Deprecate
into_iter_on_array
#4788 - Expand
string_lit_as_bytes
to also trigger when literal has escapes #4808 - Fix false positive in
comparison_chain
#4842 - Fix false positive in
while_immutable_condition
#4730 - Fix false positive in
explicit_counter_loop
#4803 - Fix false positive in
must_use_candidate
#4794 - Fix false positive in
print_with_newline
andwrite_with_newline
#4769 - Fix false positive in
derive_hash_xor_eq
#4766 - Fix false positive in
missing_inline_in_public_items
#4870 - Fix false positive in
string_add
#4880 - Fix false positive in
float_arithmetic
#4851 - Fix false positive in
cast_sign_loss
#4883 - Fix false positive in
manual_swap
#4877 - Fix ICEs occurring while checking some block expressions #4772
- Fix ICE in
use_self
#4776 - Fix ICEs related to
const_generics
#4780 - Display help when running
clippy-driver
without arguments, instead of ICEing #4810 - Clippy has its own ICE message now #4588
- Show deprecated lints in the documentation again #4757
- Improve Documentation by adding positive examples to some lints #4832
Rust 1.40
Released 2019-12-19
View all 76 merged pull requests
- New Lints:
unneeded_wildcard_pattern
#4537needless_doctest_main
#4603suspicious_unary_op_formatting
#4615debug_assert_with_mut_call
#4680unused_self
#4619inefficient_to_string
#4683must_use_unit
#4560must_use_candidate
#4560double_must_use
#4560comparison_chain
#4569unsound_collection_transmute
#4592panic
#4657unreachable
#4657todo
#4657option_expect_used
#4657result_expect_used
#4657
- Move
redundant_clone
to perf group #4509 - Move
manual_mul_add
to nursery group #4736 - Expand
unit_cmp
to also work withassert_eq!
,debug_assert_eq!
,assert_ne!
anddebug_assert_ne!
#4613 - Expand
integer_arithmetic
to also detect mutating arithmetic like+=
#4585 - Fix false positive in
nonminimal_bool
#4568 - Fix false positive in
missing_safety_doc
#4611 - Fix false positive in
cast_sign_loss
#4614 - Fix false positive in
redundant_clone
#4509 - Fix false positive in
try_err
#4721 - Fix false positive in
toplevel_ref_arg
#4570 - Fix false positive in
multiple_inherent_impl
#4593 - Improve more suggestions and tests in preparation for the unstable
cargo fix --clippy
#4575 - Improve suggestion for
zero_ptr
#4599 - Improve suggestion for
explicit_counter_loop
#4691 - Improve suggestion for
mul_add
#4602 - Improve suggestion for
assertions_on_constants
#4635 - Fix ICE in
use_self
#4671 - Fix ICE when encountering const casts #4590
Rust 1.39
Released 2019-11-07
View all 100 merged pull requests
- New Lints:
- Deprecate
unused_collect
lint. This is fully covered by rustc's#[must_use]
oncollect
#4348 - Move
type_repetition_in_bounds
to pedantic group #4403 - Move
cast_lossless
to pedantic group #4539 temporary_cstring_as_ptr
now catches more cases #4425use_self
now works in constructors, too #4525cargo_common_metadata
now checks for license files #4518cognitive_complexity
now includes the measured complexity in the warning message #4469- Fix false positives in
block_in_if_*
lints #4458 - Fix false positive in
cast_lossless
#4473 - Fix false positive in
clone_on_copy
#4411 - Fix false positive in
deref_addrof
#4487 - Fix false positive in
too_many_lines
#4490 - Fix false positive in
new_ret_no_self
#4365 - Fix false positive in
manual_swap
#4478 - Fix false positive in
missing_const_for_fn
#4450 - Fix false positive in
extra_unused_lifetimes
#4477 - Fix false positive in
inherent_to_string
#4460 - Fix false positive in
map_entry
#4495 - Fix false positive in
unused_unit
#4445 - Fix false positive in
redundant_pattern
#4489 - Fix false positive in
wrong_self_convention
#4369 - Improve various suggestions and tests in preparation for the unstable
cargo fix --clippy
#4558 - Improve suggestions for
redundant_pattern_matching
#4352 - Improve suggestions for
explicit_write
#4544 - Improve suggestion for
or_fun_call
#4522 - Improve suggestion for
match_as_ref
#4446 - Improve suggestion for
unnecessary_fold_span
#4382 - Add suggestions for
unseparated_literal_suffix
#4401 - Add suggestions for
char_lit_as_u8
#4418
Rust 1.38
Released 2019-09-26
View all 76 merged pull requests
- New Lints:
- Move
{unnecessary,panicking}_unwrap
out of nursery #4307 - Extend the
use_self
lint to suggest uses ofSelf::Variant
#4308 - Improve suggestion for needless return #4262
- Add auto-fixable suggestion for
let_unit
#4337 - Fix false positive in
pub_enum_variant_names
andenum_variant_names
#4345 - Fix false positive in
cast_ptr_alignment
#4257 - Fix false positive in
string_lit_as_bytes
#4233 - Fix false positive in
needless_lifetimes
#4266 - Fix false positive in
float_cmp
#4275 - Fix false positives in
needless_return
#4274 - Fix false negative in
match_same_arms
#4246 - Fix incorrect suggestion for
needless_bool
#4335 - Improve suggestion for
cast_ptr_alignment
#4257 - Improve suggestion for
single_char_literal
#4361 - Improve suggestion for
len_zero
#4314 - Fix ICE in
implicit_hasher
#4268 - Fix allow bug in
trivially_copy_pass_by_ref
#4250
Rust 1.37
Released 2019-08-15
View all 72 merged pull requests
- New Lints:
- Renamed Lint:
const_static_lifetime
is now calledredundant_static_lifetimes
. The lint now covers statics in addition to consts #4162 match_same_arms
now warns for all identical arms, instead of only the first one #4102needless_return
now works with void functions #4220- Fix false positive in
redundant_closure
#4190 - Fix false positive in
useless_attribute
#4107 - Fix incorrect suggestion for
float_cmp
#4214 - Add suggestions for
print_with_newline
andwrite_with_newline
#4136 - Improve suggestions for
option_map_unwrap_or_else
andresult_map_unwrap_or_else
#4164 - Improve suggestions for
non_ascii_literal
#4119 - Improve diagnostics for
let_and_return
#4137 - Improve diagnostics for
trivially_copy_pass_by_ref
#4071 - Add macro check for
unreadable_literal
#4099
Rust 1.36
Released 2019-07-04
View all 81 merged pull requests
- New lints:
find_map
,filter_map_next
#4039 - New lint:
path_buf_push_overwrite
#3954 - Move
path_buf_push_overwrite
to the nursery #4013 - Split
redundant_closure
intoredundant_closure
andredundant_closure_for_method_calls
#4110 - Allow allowing of
toplevel_ref_arg
lint #4007 - Fix false negative in
or_fun_call
pertaining to nested constructors #4084 - Fix false positive in
or_fun_call
pertaining to enum variant constructors #4018 - Fix false positive in
useless_let_if_seq
pertaining to interior mutability #4035 - Fix false positive in
redundant_closure
pertaining to non-function types #4008 - Fix false positive in
let_and_return
pertaining to attributes onlet
s #4024 - Fix false positive in
module_name_repetitions
lint pertaining to attributes #4006 - Fix false positive on
assertions_on_constants
pertaining todebug_assert!
#3989 - Improve suggestion in
map_clone
to suggest.copied()
where applicable #3970 #4043 - Improve suggestion for
search_is_some
#4049 - Improve suggestion applicability for
naive_bytecount
#3984 - Improve suggestion applicability for
while_let_loop
#3975 - Improve diagnostics for
too_many_arguments
#4053 - Improve diagnostics for
cast_lossless
#4021 - Deal with macro checks in desugarings better #4082
- Add macro check for
unnecessary_cast
#4026 - Remove
approx_constant
's documentation's "Known problems" section. #4027 - Fix ICE in
suspicious_else_formatting
#3960 - Fix ICE in
decimal_literal_representation
#3931
Rust 1.35
Released 2019-05-20
- New lint:
drop_bounds
to detectT: Drop
bounds - Split
redundant_closure
intoredundant_closure
andredundant_closure_for_method_calls
#4110 - Rename
cyclomatic_complexity
tocognitive_complexity
, start work on making lint more practical for Rust code - Move
get_unwrap
to the restriction category - Improve suggestions for
iter_cloned_collect
- Improve suggestions for
cast_lossless
to suggest suffixed literals - Fix false positives in
print_with_newline
andwrite_with_newline
pertaining to raw strings - Fix false positive in
needless_range_loop
pertaining to structs without a.iter()
- Fix false positive in
bool_comparison
pertaining to non-bool types - Fix false positive in
redundant_closure
pertaining to differences in borrows - Fix false positive in
option_map_unwrap_or
on non-copy types - Fix false positives in
missing_const_for_fn
pertaining to macros and trait method impls - Fix false positive in
needless_pass_by_value
pertaining to procedural macros - Fix false positive in
needless_continue
pertaining to loop labels - Fix false positive for
boxed_local
pertaining to arguments moved into closures - Fix false positive for
use_self
in nested functions - Fix suggestion for
expect_fun_call
(https://github.com/rust-lang/rust-clippy/pull/3846) - Fix suggestion for
explicit_counter_loop
to deal with parenthesizing range variables - Fix suggestion for
single_char_pattern
to correctly escape single quotes - Avoid triggering
redundant_closure
in macros - ICE fixes: #3805, #3772, #3741
Rust 1.34
Released 2019-04-10
View all 61 merged pull requests
- New lint:
assertions_on_constants
to detect for exampleassert!(true)
- New lint:
dbg_macro
to detect uses of thedbg!
macro - New lint:
missing_const_for_fn
that can suggest functions to be madeconst
- New lint:
too_many_lines
to detect functions with excessive LOC. It can be configured using thetoo-many-lines-threshold
configuration. - New lint:
wildcard_enum_match_arm
to check for wildcard enum matches using_
- Expand
redundant_closure
to also work for methods (not only functions) - Fix ICEs in
vec_box
,needless_pass_by_value
andimplicit_hasher
- Fix false positive in
cast_sign_loss
- Fix false positive in
integer_arithmetic
- Fix false positive in
unit_arg
- Fix false positives in
implicit_return
- Add suggestion to
explicit_write
- Improve suggestions for
question_mark
lint - Fix incorrect suggestion for
cast_lossless
- Fix incorrect suggestion for
expect_fun_call
- Fix incorrect suggestion for
needless_bool
- Fix incorrect suggestion for
needless_range_loop
- Fix incorrect suggestion for
use_self
- Fix incorrect suggestion for
while_let_on_iterator
- Clippy is now slightly easier to invoke in non-cargo contexts. See #3665 for more details.
- We now have improved documentation on how to add new lints
Rust 1.33
Released 2019-02-26
View all 120 merged pull requests
- New lints:
implicit_return
,vec_box
,cast_ref_to_mut
- The
rust-clippy
repository is now part of therust-lang
org. - Rename
stutter
tomodule_name_repetitions
- Merge
new_without_default_derive
intonew_without_default
lint - Move
large_digit_groups
fromstyle
group topedantic
- Expand
bool_comparison
to check for<
,<=
,>
,>=
, and!=
comparisons against booleans - Expand
no_effect
to detect writes to constants such asA_CONST.field = 2
- Expand
redundant_clone
to work on struct fields - Expand
suspicious_else_formatting
to detectif .. {..} {..}
- Expand
use_self
to work on tuple structs and also in local macros - Fix ICE in
result_map_unit_fn
andoption_map_unit_fn
- Fix false positives in
implicit_return
- Fix false positives in
use_self
- Fix false negative in
clone_on_copy
- Fix false positive in
doc_markdown
- Fix false positive in
empty_loop
- Fix false positive in
if_same_then_else
- Fix false positive in
infinite_iter
- Fix false positive in
question_mark
- Fix false positive in
useless_asref
- Fix false positive in
wildcard_dependencies
- Fix false positive in
write_with_newline
- Add suggestion to
explicit_write
- Improve suggestions for
question_mark
lint - Fix incorrect suggestion for
get_unwrap
Rust 1.32
Released 2019-01-17
View all 71 merged pull requests
- New lints:
slow_vector_initialization
,mem_discriminant_non_enum
,redundant_clone
,wildcard_dependencies
,into_iter_on_ref
,into_iter_on_array
,deprecated_cfg_attr
,cargo_common_metadata
- Add support for
u128
andi128
to integer related lints - Add float support to
mistyped_literal_suffixes
- Fix false positives in
use_self
- Fix false positives in
missing_comma
- Fix false positives in
new_ret_no_self
- Fix false positives in
possible_missing_comma
- Fix false positive in
integer_arithmetic
in constant items - Fix false positive in
needless_borrow
- Fix false positive in
out_of_bounds_indexing
- Fix false positive in
new_without_default_derive
- Fix false positive in
string_lit_as_bytes
- Fix false negative in
out_of_bounds_indexing
- Fix false negative in
use_self
. It will now also check existential types - Fix incorrect suggestion for
redundant_closure_call
- Fix various suggestions that contained expanded macros
- Fix
bool_comparison
triggering 3 times on on on the same code - Expand
trivially_copy_pass_by_ref
to work on trait methods - Improve suggestion for
needless_range_loop
- Move
needless_pass_by_value
frompedantic
group tostyle
Rust 1.31
Released 2018-12-06
- Clippy has been relicensed under a dual MIT / Apache license. See #3093 for more information.
- With Rust 1.31, Clippy is no longer available via crates.io. The recommended
installation method is via
rustup component add clippy
. - New lints:
redundant_pattern_matching
,unnecessary_filter_map
,unused_unit
,map_flatten
,mem_replace_option_with_none
- Fix ICE in
if_let_redundant_pattern_matching
- Fix ICE in
needless_pass_by_value
when encountering a generic function argument with a lifetime parameter - Fix ICE in
needless_range_loop
- Fix ICE in
single_char_pattern
when encountering a constant value - Fix false positive in
assign_op_pattern
- Fix false positive in
boxed_local
on trait implementations - Fix false positive in
cmp_owned
- Fix false positive in
collapsible_if
when conditionals have comments - Fix false positive in
double_parens
- Fix false positive in
excessive_precision
- Fix false positive in
explicit_counter_loop
- Fix false positive in
fn_to_numeric_cast_with_truncation
- Fix false positive in
map_clone
- Fix false positive in
new_ret_no_self
- Fix false positive in
new_without_default
whennew
is unsafe - Fix false positive in
type_complexity
when using extern types - Fix false positive in
useless_format
- Fix false positive in
wrong_self_convention
- Fix incorrect suggestion for
excessive_precision
- Fix incorrect suggestion for
expect_fun_call
- Fix incorrect suggestion for
get_unwrap
- Fix incorrect suggestion for
useless_format
fn_to_numeric_cast_with_truncation
lint can be disabled again- Improve suggestions for
manual_memcpy
- Improve help message for
needless_lifetimes
Rust 1.30
Released 2018-10-25
View all 88 merged pull requests
- Deprecate
assign_ops
lint - New lints:
mistyped_literal_suffixes
,ptr_offset_with_cast
,needless_collect
,copy_iterator
cargo clippy -V
now includes the Clippy commit hash of the Rust Clippy component- Fix ICE in
implicit_hasher
- Fix ICE when encountering
println!("{}" a);
- Fix ICE when encountering a macro call in match statements
- Fix false positive in
default_trait_access
- Fix false positive in
trivially_copy_pass_by_ref
- Fix false positive in
similar_names
- Fix false positive in
redundant_field_name
- Fix false positive in
expect_fun_call
- Fix false negative in
identity_conversion
- Fix false negative in
explicit_counter_loop
- Fix
range_plus_one
suggestion and false negative print_with_newline
/write_with_newline
: don't warn about string with several\n
s in them- Fix
useless_attribute
to also whitelistunused_extern_crates
- Fix incorrect suggestion for
single_char_pattern
- Improve suggestion for
identity_conversion
lint - Move
explicit_iter_loop
andexplicit_into_iter_loop
fromstyle
group topedantic
- Move
range_plus_one
andrange_minus_one
fromnursery
group tocomplexity
- Move
shadow_unrelated
fromrestriction
group topedantic
- Move
indexing_slicing
frompedantic
group torestriction
Rust 1.29
Released 2018-09-13
- 🎉 🎉 Rust 1.29 is the first stable Rust that includes a bundled Clippy 🎉
🎉
You can now run
rustup component add clippy-preview
and thencargo clippy
to run Clippy. This should put an end to the continuous nightly upgrades for Clippy users. - Clippy now follows the Rust versioning scheme instead of its own
- Fix ICE when encountering a
while let (..) = x.iter()
construct - Fix false positives in
use_self
- Fix false positive in
trivially_copy_pass_by_ref
- Fix false positive in
useless_attribute
lint - Fix false positive in
print_literal
- Fix
use_self
regressions - Improve lint message for
neg_cmp_op_on_partial_ord
- Improve suggestion highlight for
single_char_pattern
- Improve suggestions for various print/write macro lints
- Improve website header
0.0.212 (2018-07-10)
- Rustup to rustc 1.29.0-nightly (
e06c87544
2018-07-06)
0.0.211
- Rustup to rustc 1.28.0-nightly (
e3bf634e0
2018-06-28)
0.0.210
- Rustup to rustc 1.28.0-nightly (
01cc982e9
2018-06-24)
0.0.209
- Rustup to rustc 1.28.0-nightly (
523097979
2018-06-18)
0.0.208
- Rustup to rustc 1.28.0-nightly (
86a8f1a63
2018-06-17)
0.0.207
- Rustup to rustc 1.28.0-nightly (
2a0062974
2018-06-09)
0.0.206
- Rustup to rustc 1.28.0-nightly (
5bf68db6e
2018-05-28)
0.0.205
- Rustup to rustc 1.28.0-nightly (
990d8aa74
2018-05-25) - Rename
unused_lifetimes
toextra_unused_lifetimes
because of naming conflict with new rustc lint
0.0.204
- Rustup to rustc 1.28.0-nightly (
71e87be38
2018-05-22)
0.0.203
- Rustup to rustc 1.28.0-nightly (
a3085756e
2018-05-19) - Clippy attributes are now of the form
clippy::cyclomatic_complexity
instead ofclippy(cyclomatic_complexity)
0.0.202
- Rustup to rustc 1.28.0-nightly (
952f344cd
2018-05-18)
0.0.201
- Rustup to rustc 1.27.0-nightly (
2f2a11dfc
2018-05-16)
0.0.200
- Rustup to rustc 1.27.0-nightly (
9fae15374
2018-05-13)
0.0.199
- Rustup to rustc 1.27.0-nightly (
ff2ac35db
2018-05-12)
0.0.198
- Rustup to rustc 1.27.0-nightly (
acd3871ba
2018-05-10)
0.0.197
- Rustup to rustc 1.27.0-nightly (
428ea5f6b
2018-05-06)
0.0.196
- Rustup to rustc 1.27.0-nightly (
e82261dfb
2018-05-03)
0.0.195
- Rustup to rustc 1.27.0-nightly (
ac3c2288f
2018-04-18)
0.0.194
- Rustup to rustc 1.27.0-nightly (
bd40cbbe1
2018-04-14) - New lints:
cast_ptr_alignment
,transmute_ptr_to_ptr
,write_literal
,write_with_newline
,writeln_empty_string
0.0.193
- Rustup to rustc 1.27.0-nightly (
eeea94c11
2018-04-06)
0.0.192
- Rustup to rustc 1.27.0-nightly (
fb44b4c0e
2018-04-04) - New lint:
print_literal
0.0.191
- Rustup to rustc 1.26.0-nightly (
ae544ee1c
2018-03-29) - Lint audit; categorize lints as style, correctness, complexity, pedantic, nursery, restriction.
0.0.190
- Fix a bunch of intermittent cargo bugs
0.0.189
- Rustup to rustc 1.26.0-nightly (
5508b2714
2018-03-18)
0.0.188
- Rustup to rustc 1.26.0-nightly (
392645394
2018-03-15) - New lint:
while_immutable_condition
0.0.187
- Rustup to rustc 1.26.0-nightly (
322d7f7b9
2018-02-25) - New lints:
redundant_field_names
,suspicious_arithmetic_impl
,suspicious_op_assign_impl
0.0.186
- Rustup to rustc 1.25.0-nightly (
0c6091fbd
2018-02-04) - Various false positive fixes
0.0.185
- Rustup to rustc 1.25.0-nightly (
56733bc9f
2018-02-01) - New lint:
question_mark
0.0.184
- Rustup to rustc 1.25.0-nightly (
90eb44a58
2018-01-29) - New lints:
double_comparisons
,empty_line_after_outer_attr
0.0.183
- Rustup to rustc 1.25.0-nightly (
21882aad7
2018-01-28) - New lint:
misaligned_transmute
0.0.182
- Rustup to rustc 1.25.0-nightly (
a0dcecff9
2018-01-24) - New lint:
decimal_literal_representation
0.0.181
- Rustup to rustc 1.25.0-nightly (
97520ccb1
2018-01-21) - New lints:
else_if_without_else
,option_option
,unit_arg
,unnecessary_fold
- Removed
unit_expr
- Various false positive fixes for
needless_pass_by_value
0.0.180
- Rustup to rustc 1.25.0-nightly (
3f92e8d89
2018-01-14)
0.0.179
- Rustup to rustc 1.25.0-nightly (
61452e506
2018-01-09)
0.0.178
- Rustup to rustc 1.25.0-nightly (
ee220daca
2018-01-07)
0.0.177
- Rustup to rustc 1.24.0-nightly (
250b49205
2017-12-21) - New lint:
match_as_ref
0.0.176
- Rustup to rustc 1.24.0-nightly (
0077d128d
2017-12-14)
0.0.175
- Rustup to rustc 1.24.0-nightly (
bb42071f6
2017-12-01)
0.0.174
- Rustup to rustc 1.23.0-nightly (
63739ab7b
2017-11-21)
0.0.173
- Rustup to rustc 1.23.0-nightly (
33374fa9d
2017-11-20)
0.0.172
- Rustup to rustc 1.23.0-nightly (
d0f8e2913
2017-11-16)
0.0.171
- Rustup to rustc 1.23.0-nightly (
ff0f5de3b
2017-11-14)
0.0.170
- Rustup to rustc 1.23.0-nightly (
d6b06c63a
2017-11-09)
0.0.169
- Rustup to rustc 1.23.0-nightly (
3b82e4c74
2017-11-05) - New lints:
just_underscores_and_digits
,result_map_unwrap_or_else
,transmute_bytes_to_str
0.0.168
- Rustup to rustc 1.23.0-nightly (
f0fe716db
2017-10-30)
0.0.167
- Rustup to rustc 1.23.0-nightly (
90ef3372e
2017-10-29) - New lints:
const_static_lifetime
,erasing_op
,fallible_impl_from
,println_empty_string
,useless_asref
0.0.166
- Rustup to rustc 1.22.0-nightly (
b7960878b
2017-10-18) - New lints:
explicit_write
,identity_conversion
,implicit_hasher
,invalid_ref
,option_map_or_none
,range_minus_one
,range_plus_one
,transmute_int_to_bool
,transmute_int_to_char
,transmute_int_to_float
0.0.165
- Rust upgrade to rustc 1.22.0-nightly (
0e6f4cf51
2017-09-27) - New lint:
mut_range_bound
0.0.164
- Update to rustc 1.22.0-nightly (
6c476ce46
2017-09-25) - New lint:
int_plus_one
0.0.163
- Update to rustc 1.22.0-nightly (
14039a42a
2017-09-22)
0.0.162
- Update to rustc 1.22.0-nightly (
0701b37d9
2017-09-18) - New lint:
chars_last_cmp
- Improved suggestions for
needless_borrow
,ptr_arg
,
0.0.161
- Update to rustc 1.22.0-nightly (
539f2083d
2017-09-13)
0.0.160
- Update to rustc 1.22.0-nightly (
dd08c3070
2017-09-12)
0.0.159
- Update to rustc 1.22.0-nightly (
eba374fb2
2017-09-11) - New lint:
clone_on_ref_ptr
0.0.158
- New lint:
manual_memcpy
cast_lossless
no longer has redundant parentheses in its suggestions- Update to rustc 1.22.0-nightly (
dead08cb3
2017-09-08)
0.0.157 - 2017-09-04
- Update to rustc 1.22.0-nightly (
981ce7d8d
2017-09-03) - New lint:
unit_expr
0.0.156 - 2017-09-03
- Update to rustc 1.22.0-nightly (
744dd6c1d
2017-09-02)
0.0.155
- Update to rustc 1.21.0-nightly (
c11f689d2
2017-08-29) - New lint:
infinite_iter
,maybe_infinite_iter
,cast_lossless
0.0.154
- Update to rustc 1.21.0-nightly (
2c0558f63
2017-08-24) - Fix
use_self
triggering inside derives - Add support for linting an entire workspace with
cargo clippy --all
- New lint:
naive_bytecount
0.0.153
0.0.152
- Update to rustc 1.21.0-nightly (
df511d554
2017-08-14)
0.0.151
- Update to rustc 1.21.0-nightly (
13d94d5fa
2017-08-10)
0.0.150
- Update to rustc 1.21.0-nightly (
215e0b10e
2017-08-08)
0.0.148
- Update to rustc 1.21.0-nightly (
37c7d0ebb
2017-07-31) - New lints:
unreadable_literal
,inconsistent_digit_grouping
,large_digit_groups
0.0.147
- Update to rustc 1.21.0-nightly (
aac223f4f
2017-07-30)
0.0.146
- Update to rustc 1.21.0-nightly (
52a330969
2017-07-27) - Fixes false positives in
inline_always
- Fixes false negatives in
panic_params
0.0.145
- Update to rustc 1.20.0-nightly (
afe145d22
2017-07-23)
0.0.144
- Update to rustc 1.20.0-nightly (
086eaa78e
2017-07-15)
0.0.143
- Update to rustc 1.20.0-nightly (
d84693b93
2017-07-09) - Fix
cargo clippy
crashing ondylib
projects - Fix false positives around
nested_while_let
andnever_loop
0.0.142
- Update to rustc 1.20.0-nightly (
067971139
2017-07-02)
0.0.141
- Rewrite of the
doc_markdown
lint. - Deprecated
range_step_by_zero
- New lint:
iterator_step_by_zero
- New lint:
needless_borrowed_reference
- Update to rustc 1.20.0-nightly (
69c65d296
2017-06-28)
0.0.140 - 2017-06-16
- Update to rustc 1.19.0-nightly (
258ae6dd9
2017-06-15)
0.0.139 — 2017-06-10
- Update to rustc 1.19.0-nightly (
4bf5c99af
2017-06-10) - Fix bugs with for loop desugaring
- Check for
AsRef
/AsMut
arguments inwrong_self_convention
0.0.138 — 2017-06-05
- Update to rustc 1.19.0-nightly (
0418fa9d3
2017-06-04)
0.0.137 — 2017-06-05
- Update to rustc 1.19.0-nightly (
6684d176c
2017-06-03)
0.0.136 — 2017—05—26
- Update to rustc 1.19.0-nightly (
557967766
2017-05-26)
0.0.135 — 2017—05—24
- Update to rustc 1.19.0-nightly (
5b13bff52
2017-05-23)
0.0.134 — 2017—05—19
- Update to rustc 1.19.0-nightly (
0ed1ec9f9
2017-05-18)
0.0.133 — 2017—05—14
- Update to rustc 1.19.0-nightly (
826d8f385
2017-05-13)
0.0.132 — 2017—05—05
- Fix various bugs and some ices
0.0.131 — 2017—05—04
- Update to rustc 1.19.0-nightly (
2d4ed8e0c
2017-05-03)
0.0.130 — 2017—05—03
- Update to rustc 1.19.0-nightly (
6a5fc9eec
2017-05-02)
0.0.129 — 2017-05-01
- Update to rustc 1.19.0-nightly (
06fb4d256
2017-04-30)
0.0.128 — 2017-04-28
- Update to rustc 1.18.0-nightly (
94e884b63
2017-04-27)
0.0.127 — 2017-04-27
- Update to rustc 1.18.0-nightly (
036983201
2017-04-26) - New lint:
needless_continue
0.0.126 — 2017-04-24
- Update to rustc 1.18.0-nightly (
2bd4b5c6d
2017-04-23)
0.0.125 — 2017-04-19
- Update to rustc 1.18.0-nightly (
9f2abadca
2017-04-18)
0.0.124 — 2017-04-16
- Update to rustc 1.18.0-nightly (
d5cf1cb64
2017-04-15)
0.0.123 — 2017-04-07
- Fix various false positives
0.0.122 — 2017-04-07
0.0.121 — 2017-03-21
- Rustup to rustc 1.17.0-nightly (
134c4a0f0
2017-03-20)
0.0.120 — 2017-03-17
- Rustup to rustc 1.17.0-nightly (
0aeb9c129
2017-03-15)
0.0.119 — 2017-03-13
- Rustup to rustc 1.17.0-nightly (
824c9ebbd
2017-03-12)
0.0.118 — 2017-03-05
- Rustup to rustc 1.17.0-nightly (
b1e31766d
2017-03-03)
0.0.117 — 2017-03-01
- Rustup to rustc 1.17.0-nightly (
be760566c
2017-02-28)
0.0.116 — 2017-02-28
- Fix
cargo clippy
on 64 bit windows systems
0.0.115 — 2017-02-27
- Rustup to rustc 1.17.0-nightly (
60a0edc6c
2017-02-26) - New lints:
zero_ptr
,never_loop
,mut_from_ref
0.0.114 — 2017-02-08
- Rustup to rustc 1.17.0-nightly (
c49d10207
2017-02-07) - Tests are now ui tests (testing the exact output of rustc)
0.0.113 — 2017-02-04
- Rustup to rustc 1.16.0-nightly (
eedaa94e3
2017-02-02) - New lint:
large_enum_variant
explicit_into_iter_loop
provides suggestions
0.0.112 — 2017-01-27
- Rustup to rustc 1.16.0-nightly (
df8debf6d
2017-01-25)
0.0.111 — 2017-01-21
- Rustup to rustc 1.16.0-nightly (
a52da95ce
2017-01-20)
0.0.110 — 2017-01-20
- Add badges and categories to
Cargo.toml
0.0.109 — 2017-01-19
- Update to rustc 1.16.0-nightly (
c07a6ae77
2017-01-17)
0.0.108 — 2017-01-12
- Update to rustc 1.16.0-nightly (
2782e8f8f
2017-01-12)
0.0.107 — 2017-01-11
- Update regex dependency
- Fix FP when matching
&&mut
by&ref
- Reintroduce
for (_, x) in &mut hash_map
->for x in hash_map.values_mut()
- New lints:
unused_io_amount
,forget_ref
,short_circuit_statement
0.0.106 — 2017-01-04
- Fix FP introduced by rustup in
wrong_self_convention
0.0.105 — 2017-01-04
- Update to rustc 1.16.0-nightly (
468227129
2017-01-03) - New lints:
deref_addrof
,double_parens
,pub_enum_variant_names
- Fix suggestion in
new_without_default
- FP fix in
absurd_extreme_comparisons
0.0.104 — 2016-12-15
- Update to rustc 1.15.0-nightly (
8f02c429a
2016-12-15)
0.0.103 — 2016-11-25
- Update to rustc 1.15.0-nightly (
d5814b03e
2016-11-23)
0.0.102 — 2016-11-24
- Update to rustc 1.15.0-nightly (
3bf2be9ce
2016-11-22)
0.0.101 — 2016-11-23
- Update to rustc 1.15.0-nightly (
7b3eeea22
2016-11-21) - New lint:
string_extend_chars
0.0.100 — 2016-11-20
- Update to rustc 1.15.0-nightly (
ac635aa95
2016-11-18)
0.0.99 — 2016-11-18
- Update to rustc 1.15.0-nightly (
0ed951993
2016-11-14) - New lint:
get_unwrap
0.0.98 — 2016-11-08
- Fixes an issue due to a change in how cargo handles
--sysroot
, which brokecargo clippy
0.0.97 — 2016-11-03
- For convenience,
cargo clippy
defines acargo-clippy
feature. This was previously added for a short time under the nameclippy
but removed for compatibility. cargo clippy --help
is more helping (and less helpful 😄)- Rustup to rustc 1.14.0-nightly (
5665bdf3e
2016-11-02) - New lints:
if_let_redundant_pattern_matching
,partialeq_ne_impl
0.0.96 — 2016-10-22
- Rustup to rustc 1.14.0-nightly (
f09420685
2016-10-20) - New lint:
iter_skip_next
0.0.95 — 2016-10-06
- Rustup to rustc 1.14.0-nightly (
3210fd5c2
2016-10-05)
0.0.94 — 2016-10-04
- Fixes bustage on Windows due to forbidden directory name
0.0.93 — 2016-10-03
- Rustup to rustc 1.14.0-nightly (
144af3e97
2016-10-02) option_map_unwrap_or
andoption_map_unwrap_or_else
are now allowed by default.- New lint:
explicit_into_iter_loop
0.0.92 — 2016-09-30
- Rustup to rustc 1.14.0-nightly (
289f3a4ca
2016-09-29)
0.0.91 — 2016-09-28
- Rustup to rustc 1.13.0-nightly (
d0623cf7b
2016-09-26)
0.0.90 — 2016-09-09
- Rustup to rustc 1.13.0-nightly (
f1f40f850
2016-09-09)
0.0.89 — 2016-09-06
- Rustup to rustc 1.13.0-nightly (
cbe4de78e
2016-09-05)
0.0.88 — 2016-09-04
- Rustup to rustc 1.13.0-nightly (
70598e04f
2016-09-03) - The following lints are not new but were only usable through the
clippy
lint groups:filter_next
,for_loop_over_option
,for_loop_over_result
andmatch_overlapping_arm
. You should now be able to#[allow/deny]
them individually and they are available directly throughcargo clippy
.
0.0.87 — 2016-08-31
- Rustup to rustc 1.13.0-nightly (
eac41469d
2016-08-30) - New lints:
builtin_type_shadow
- Fix FP in
zero_prefixed_literal
and0b
/0o
0.0.86 — 2016-08-28
- Rustup to rustc 1.13.0-nightly (
a23064af5
2016-08-27) - New lints:
missing_docs_in_private_items
,zero_prefixed_literal
0.0.85 — 2016-08-19
- Fix ICE with
useless_attribute
useless_attribute
ignoresunused_imports
onuse
statements
0.0.84 — 2016-08-18
- Rustup to rustc 1.13.0-nightly (
aef6971ca
2016-08-17)
0.0.83 — 2016-08-17
- Rustup to rustc 1.12.0-nightly (
1bf5fa326
2016-08-16) - New lints:
print_with_newline
,useless_attribute
0.0.82 — 2016-08-17
- Rustup to rustc 1.12.0-nightly (
197be89f3
2016-08-15) - New lint:
module_inception
0.0.81 — 2016-08-14
- Rustup to rustc 1.12.0-nightly (
1deb02ea6
2016-08-12) - New lints:
eval_order_dependence
,mixed_case_hex_literals
,unseparated_literal_suffix
- False positive fix in
too_many_arguments
- Addition of functionality to
needless_borrow
- Suggestions for
clone_on_copy
- Bug fix in
wrong_self_convention
- Doc improvements
0.0.80 — 2016-07-31
- Rustup to rustc 1.12.0-nightly (
1225e122f
2016-07-30) - New lints:
misrefactored_assign_op
,serde_api_misuse
0.0.79 — 2016-07-10
- Rustup to rustc 1.12.0-nightly (
f93aaf84c
2016-07-09) - Major suggestions refactoring
0.0.78 — 2016-07-02
- Rustup to rustc 1.11.0-nightly (
01411937f
2016-07-01) - New lints:
wrong_transmute
,double_neg
,filter_map
- For compatibility,
cargo clippy
does not defines theclippy
feature introduced in 0.0.76 anymore collapsible_if
now considersif let
0.0.77 — 2016-06-21
0.0.76 — 2016-06-10
- Rustup to rustc 1.11.0-nightly (
7d2f75a95
2016-06-09) cargo clippy
now automatically defines theclippy
feature- New lint:
not_unsafe_ptr_arg_deref
0.0.75 — 2016-06-08
- Rustup to rustc 1.11.0-nightly (
763f9234b
2016-06-06)
0.0.74 — 2016-06-07
- Fix bug with
cargo-clippy
JSON parsing - Add the
CLIPPY_DISABLE_DOCS_LINKS
environment variable to deactivate the “for further information visit lint-link” message.
0.0.73 — 2016-06-05
- Fix false positives in
useless_let_if_seq
0.0.72 — 2016-06-04
- Fix false positives in
useless_let_if_seq
0.0.71 — 2016-05-31
- Rustup to rustc 1.11.0-nightly (
a967611d8
2016-05-30) - New lint:
useless_let_if_seq
0.0.70 — 2016-05-28
- Rustup to rustc 1.10.0-nightly (
7bddce693
2016-05-27) invalid_regex
andtrivial_regex
can now warn onRegexSet::new
,RegexBuilder::new
and byte regexes
0.0.69 — 2016-05-20
- Rustup to rustc 1.10.0-nightly (
476fe6eef
2016-05-21) used_underscore_binding
has been madeAllow
temporarily
0.0.68 — 2016-05-17
- Rustup to rustc 1.10.0-nightly (
cd6a40017
2016-05-16) - New lint:
unnecessary_operation
0.0.67 — 2016-05-12
- Rustup to rustc 1.10.0-nightly (
22ac88f1a
2016-05-11)
0.0.66 — 2016-05-11
- New
cargo clippy
subcommand - New lints:
assign_op_pattern
,assign_ops
,needless_borrow
0.0.65 — 2016-05-08
- Rustup to rustc 1.10.0-nightly (
62e2b2fb7
2016-05-06) - New lints:
float_arithmetic
,integer_arithmetic
0.0.64 — 2016-04-26
- Rustup to rustc 1.10.0-nightly (
645dd013a
2016-04-24) - New lints:
temporary_cstring_as_ptr
,unsafe_removed_from_name
, andmem_forget
0.0.63 — 2016-04-08
- Rustup to rustc 1.9.0-nightly (
7979dd608
2016-04-07)
0.0.62 — 2016-04-07
- Rustup to rustc 1.9.0-nightly (
bf5da36f1
2016-04-06)
0.0.61 — 2016-04-03
- Rustup to rustc 1.9.0-nightly (
5ab11d72c
2016-04-02) - New lint:
invalid_upcast_comparisons
0.0.60 — 2016-04-01
- Rustup to rustc 1.9.0-nightly (
e1195c24b
2016-03-31)
0.0.59 — 2016-03-31
- Rustup to rustc 1.9.0-nightly (
30a3849f2
2016-03-30) - New lints:
logic_bug
,nonminimal_bool
- Fixed:
match_same_arms
now ignores arms with guards - Improved:
useless_vec
now warns onfor … in vec![…]
0.0.58 — 2016-03-27
- Rustup to rustc 1.9.0-nightly (
d5a91e695
2016-03-26) - New lint:
doc_markdown
0.0.57 — 2016-03-27
- Update to rustc 1.9.0-nightly (
a1e29daf1
2016-03-25) - Deprecated lints:
str_to_string
,string_to_string
,unstable_as_slice
,unstable_as_mut_slice
- New lint:
crosspointer_transmute
0.0.56 — 2016-03-23
- Update to rustc 1.9.0-nightly (
0dcc413e4
2016-03-22) - New lints:
many_single_char_names
andsimilar_names
0.0.55 — 2016-03-21
- Update to rustc 1.9.0-nightly (
02310fd31
2016-03-19)
0.0.54 — 2016-03-16
- Update to rustc 1.9.0-nightly (
c66d2380a
2016-03-15)
0.0.53 — 2016-03-15
- Add a configuration file
0.0.52
0.0.51 — 2016-03-13
- Add
str
to types considered bylen_zero
- New lints:
indexing_slicing
0.0.50 — 2016-03-11
- Update to rustc 1.9.0-nightly (
c9629d61c
2016-03-10)
0.0.49 — 2016-03-09
- Update to rustc 1.9.0-nightly (
eabfc160f
2016-03-08) - New lints:
overflow_check_conditional
,unused_label
,new_without_default
0.0.48 — 2016-03-07
- Fixed: ICE in
needless_range_loop
with globals
0.0.47 — 2016-03-07
- Update to rustc 1.9.0-nightly (
998a6720b
2016-03-07) - New lint:
redundant_closure_call